OpenMedicare
Start Here
Explore
Fraud
Investigations
Data
Tools
About

Footer

OpenMedicare

Independent Medicare data journalism

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending

Explore

  • Providers
  • Procedures
  • States
  • Specialties
  • Search

Fraud Analysis

  • Still Out There (AI)
  • Fraud Overview
  • Fraud Watchlist
  • Deep Dive Profiles
  • Impossible Numbers
  • Report Fraud

Investigations

  • The Algorithm Knows
  • How We Built the Model
  • Internal Medicine Crisis
  • Florida & California Fraud
  • Million Dollar Flagged
  • All Investigations

Tools

  • Provider Lookup
  • Compare
  • Cost Calculator
  • Your Medicare Dollar
  • Downloads

About

  • About OpenMedicare
  • Methodology
  • Glossary
  • Data Sources
  • API Docs
  • Updates
Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
Sister Sites: OpenMedicaid ยท OpenFeds ยท OpenSpending

ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Rex Manayan
๐Ÿ”ช
MDIndividual

Rex Manayan, M.D.

NPI: 1649278599
Goodyear, AZ
10 years of data
General Surgery
$3.3M
Total Payments
3.4K
Beneficiaries
8.5K
Services
3.87x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$3.3M
Specialty median$42.2K

๐Ÿ“‹ Key Findings

1Billed $3.3M over 10 years
23.87x markup ratio (above median)
399th percentile in General Surgery by payments
4Payments surged 19246% in 2018
512 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $3.3M in total Medicare payments ranks in the 99th percentile of General Surgery providers nationally.

Medicare payments to this provider grew 10947% from 2014 to 2023.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

๐Ÿ“ˆ

Notable: Payments increased 19246% in 2018

Year-over-year payment surges can indicate changes in practice volume, new services, or billing pattern shifts.

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$440.80$88.874.96x$351.93$8.3K10096
2015$555.50$92.076.03x$463.43$8.6K9489
2016$665.00$96.536.89x$568.47$10.9K129114
2017$258.00$51.844.98x$206.16$2.3K4534
2018$952.34$367.082.59x$585.26$442.9K1.2K437
2019$1.4K$569.962.53x$874.73$951.4K2.0K697
2020$1.5K$598.362.54x$922.21$662.7K1.8K579
2021$7.3K$429.7916.88x$6.8K$145.6K377219
2022$6.8K$348.4219.47x$6.4K$131.6K330153
2023$741.19$278.692.66x$462.50$918.1K2.5K937

Top Procedures (20)

36482Chemical destruction of incompetent vein of arm or leg, accessed through the skin using imaging guidanceโš  5.0x markup
$975.3K
700 services$1.4K/svc5.02x markup
36466Injection of chemical agent into multiple incompetent veins of same leg using ultrasound guidance
$638.7K
477 services$1.3K/svc2.44x markup
36478Laser destruction of incompetent vein of arm or leg using imaging guidance, accessed through the skin
$636.7K
692 services$920.05/svc2.65x markup
36465Injection of chemical agent into single incompetent vein of leg using ultrasound guidanceโš  6.9x markup
$353.5K
326 services$1.1K/svc6.92x markup
93971Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuversโš  3.1x markup
$171.2K
1.8K services$96.01/svc3.13x markup
93970Ultrasound scan of veins of both arms or legs including assessment of compression and functional maneuversโš  3.3x markup
$125.5K
844 services$148.70/svc3.30x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$116.1K
1.9K services$60.96/svc2.65x markup
36475Destruction of insufficient vein of arm or leg, accessed through the skin
$72.4K
63 services$1.1K/svc2.61x markup
36471Injection of chemical agent into multiple incompetent veins of one leg
$64.3K
375 services$171.55/svc2.67x markup
99204New patient office or other outpatient visit, typically 45 minutes
$40.0K
345 services$116.06/svc2.92x markup
36479Laser destruction of insufficient vein of arm or leg, accessed through the skin using imaging guidance
$33.0K
127 services$259.50/svc2.44x markup
76942Ultrasonic guidance imaging supervision and interpretation for insertion of needleโš  4.3x markup
$19.8K
425 services$46.66/svc4.32x markup
99203New patient office or other outpatient visit, typically 30 minutesโš  3.7x markup
$14.6K
208 services$70.26/svc3.74x markup
99223Initial hospital inpatient care, typically 70 minutes per dayโš  3.6x markup
$8.4K
56 services$149.54/svc3.61x markup
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscopeโš  12.9x markup
$5.1K
61 services$83.59/svc12.86x markup
99212Established patient office or other outpatient visit, 10-19 minutes
$3.0K
80 services$38.05/svc2.92x markup
36470Injection of chemical agent into single incompetent veinโš  13.7x markup
$1.8K
20 services$87.77/svc13.67x markup
45378Diagnostic examination of large bowel using an endoscopeโš  8.8x markup
$1.4K
11 services$125.67/svc8.78x markup
99202New patient office or other outpatient visit, 15-29 minutesโš  4.0x markup
$1.0K
28 services$35.88/svc4.01x markup
93922Ultrasound study of arm and leg arteriesโš  3.4x markup
$616.23
13 services$47.40/svc3.41x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
36482Chemical destruction of incompetent vein of arm or leg, accessed through the skin using imaging guidance700$975.3K$1.4K5.02x
36466Injection of chemical agent into multiple incompetent veins of same leg using ultrasound guidance477$638.7K$1.3K2.44x
36478Laser destruction of incompetent vein of arm or leg using imaging guidance, accessed through the skin692$636.7K$920.052.65x
36465Injection of chemical agent into single incompetent vein of leg using ultrasound guidance326$353.5K$1.1K6.92x
93971Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers1.8K$171.2K$96.013.13x
93970Ultrasound scan of veins of both arms or legs including assessment of compression and functional maneuvers844$125.5K$148.703.30x
99213Established patient office or other outpatient visit, typically 15 minutes1.9K$116.1K$60.962.65x
36475Destruction of insufficient vein of arm or leg, accessed through the skin63$72.4K$1.1K2.61x
36471Injection of chemical agent into multiple incompetent veins of one leg375$64.3K$171.552.67x
99204New patient office or other outpatient visit, typically 45 minutes345$40.0K$116.062.92x
36479Laser destruction of insufficient vein of arm or leg, accessed through the skin using imaging guidance127$33.0K$259.502.44x
76942Ultrasonic guidance imaging supervision and interpretation for insertion of needle425$19.8K$46.664.32x
99203New patient office or other outpatient visit, typically 30 minutes208$14.6K$70.263.74x
99223Initial hospital inpatient care, typically 70 minutes per day56$8.4K$149.543.61x
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope61$5.1K$83.5912.86x
99212Established patient office or other outpatient visit, 10-19 minutes80$3.0K$38.052.92x
36470Injection of chemical agent into single incompetent vein20$1.8K$87.7713.67x
45378Diagnostic examination of large bowel using an endoscope11$1.4K$125.678.78x
99202New patient office or other outpatient visit, 15-29 minutes28$1.0K$35.884.01x
93922Ultrasound study of arm and leg arteries13$616.23$47.403.41x

Markup Analysis

Charge-to-Payment Ratio

3.87x

This provider submits charges 3.87 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.87x means for every $100 Medicare pays, this provider initially charges $387. This is higher than the national average.

Location

Goodyear, AZ

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

Related

Browse
โ† Back to Provider Directory
State
All providers in AZ โ†’
Specialty
All General Surgery providers โ†’
Tool
Compare this provider โ†’
Analysis
Fraud Watchlist โ†’
Search
Search all providers โ†’

Share This Provider

Share this provider's Medicare payment information

Share:

Data Sources

  • โ€ข Centers for Medicare & Medicaid Services (CMS)
  • โ€ข Medicare Provider Utilization and Payment Data (2014-2023)
  • โ€ข National Plan and Provider Enumeration System (NPPES)

Last Updated: February 2026 (data through 2023, the latest CMS release)

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

Believe this data is inaccurate? Dispute this data