Dr. Rex Chang Manayan, MD
- Medicare services, 2024
- 2,142
- Medicare patients, 2024
- 162
- Part D claims, 2016
- 20
- Industry payments
- $1,918
- Affiliated sites
- 2
- Practice address
- 72120 Magnesia Falls Dr, Rancho Mirage, CA 92270
- Practice phone
- Call (760) 568-3461
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Desert Vein & Vascular Institute ASC LLC
Rancho Mirage, California
Find Dr. Manayan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Rex Chang Manayan is a vascular surgeon in Rancho Mirage, California
Dr. Manayan practices at Desert Vein & Vascular Institute ASC LLC in Rancho Mirage, California.
Dr. Manayan's NPI, 1649278599, was assigned on July 13, 2005. Dr. Manayan graduated from Tufts University School of Medicine in 1991. Dr. Manayan holds Arizona license 67209.
- NPI
- 1649278599NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224009139
- NPI enumeration date
- July 13, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 568-3461
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rex Chang Manayan practices at Desert Vein & Vascular Institute ASC LLC in Rancho Mirage, California
Dr. Manayan's primary practice is Desert Vein & Vascular Institute ASC LLC, at 72120 Magnesia Falls Dr, Rancho Mirage, CA 92270 in Riverside County. The practice phone is (760) 568-3461.
- Desert Vein & Vascular Institute ASC LLC72120 Magnesia Falls Dr, Rancho Mirage, CA 92270 · Riverside CountyPhone(760) 568-3461
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Rex Chang Manayan is affiliated with 3 sites of care and 3 medical groups
Dr. Manayan's primary practice is Desert Vein & Vascular Institute ASC LLC in Rancho Mirage, California. The medical group on file is United Vein & Vascular Centers. Dmand AI also links Dr. Manayan to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Rex Chang Manayan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Manayan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Desert Vein & Vascular Institute ASC LLC | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rex Chang Manayan is one of 532 vascular surgeons in California
Vascular surgery is Dr. Manayan's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dmand AI has Dr. Manayan's licenses on file in 3 states: Arizona, California and Colorado.
Specialties and state licenses
- Vascular surgery, ArizonaPrimary
- Surgery, California
- Colorado license
Vascular surgeons near Dr. Manayan
Counts of vascular surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Rex Chang Manayan billed Medicare for 2,142 services in 2024
CMS data shows 2,142 Medicare services from Dr. Manayan across 8 procedure codes in 2024, for 162 Medicare patients. Medicare paid $894,562 for them. Every service was in an office.
Dr. Manayan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 7732024: 7602%
- Office and hospital visits
- 2023: 7812024: 64917%
- Tests and treatments
- 2023: 8052024: 62422%
- Imaging
- 2023: 1632024: 10933%
Dr. Manayan compared with the California median for vascular surgeons, 2024
- Dr. Manayan
- California median
- Medicare services
- 2,142vs 6093.5 times
- Medicare patients
- 162vs 27240% below
- Part D claims
- 20vs 5564% below
Medians across 499 vascular surgeons in California with Dmand AI profiles that report each measure.
Dr. Manayan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rex Chang Manayan treated 162 Medicare patients in 2024, average age 73
CMS counts 162 Medicare patients who saw Dr. Manayan in 2024. The largest group is 65 to 74, with 98 patients. 75% of them have high cholesterol, and 67% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Manayan's median patient age at 58, with 76% women.
Dr. Manayan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Manayan's Medicare patients by sex, 2024
- Women10766%
- Men5534%
Chronic conditions among Dr. Manayan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis60%
- Chronic kidney disease25%
- Osteoporosis22%
- Ischemic heart disease21%
- Diabetes20%
- Anxiety16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Manayan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women76%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rex Chang Manayan wrote 20 Medicare Part D claims in 2016
In 2016, Dr. Manayan wrote 20 Medicare Part D claims. They cover 1 drug, with $203 in total drug cost.
Dr. Manayan's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Rex Chang Manayan ranks in the 96th percentile for varicose vein removal in Medicare
Dr. Manayan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 446 procedures of varicose vein removal by Dr. Manayan, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Manayan ranks in Medicare procedure volume
- Varicose vein removal
- 96th percentile446 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Rex Chang Manayan received $1,918 in industry payments from 2018 to 2025
CMS Open Payments shows 60 general payments to Dr. Manayan from 9 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Tactile Systems Technology Inc paid the most, $1,067.
General payments to Dr. Manayan by program year, 2018 to 2025
Companies that paid Dr. Manayan the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Rex Chang Manayan graduated from Tufts University School of Medicine
Dr. Manayan graduated from Tufts University School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rex Chang Manayan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Rex Chang Manayan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Rex Chang Manayan's NPI number?
Dr. Rex Chang Manayan's NPI number is 1649278599. It was assigned on July 13, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Rex Chang Manayan?
Dr. Rex Chang Manayan is a vascular surgeon in Rancho Mirage, California. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Rex Chang Manayan practice?
Dr. Manayan practices at 72120 Magnesia Falls Dr, Rancho Mirage, CA 92270. Dr. Manayan's primary practice is Desert Vein & Vascular Institute ASC LLC in Rancho Mirage, California. Dmand AI also links Dr. Manayan to 2 group practices and clinics and 2 medical groups.
What is Dr. Rex Chang Manayan's office phone number?
The practice phone on file for Dr. Manayan is (760) 568-3461.
What is Dr. Rex Chang Manayan's medical license number?
Dr. Manayan holds Arizona license 67209, one of the licenses on file in 3 states.
Which states has Dr. Rex Chang Manayan been licensed in?
Dmand AI has state licenses on file for Dr. Manayan in Arizona, California and Colorado.
What medical group is Dr. Rex Chang Manayan part of?
Dr. Manayan is linked to United Vein & Vascular Centers. Dmand AI links Dr. Manayan to 2 more medical groups.
Does Dr. Rex Chang Manayan accept Medicare?
Yes. CMS data shows Dr. Manayan billed Medicare for 2,142 services in 2024, and Dr. Manayan accepts Medicare assignment.
How many Medicare patients does Dr. Rex Chang Manayan see?
CMS counts 162 Medicare patients who saw Dr. Manayan in 2024, with an average age of 73.
What services does Dr. Rex Chang Manayan bill to Medicare?
In 2024, Dr. Manayan's most billed Medicare services were office visit, established patient (99213), surgery: heart and blood vessels (36482) and blood vessel study (93971).
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Where did Dr. Rex Chang Manayan go to medical school?
Dr. Manayan graduated from Tufts University School of Medicine in 1991.
What drugs does Dr. Rex Chang Manayan prescribe most?
In 2016 Medicare Part D data, Dr. Manayan's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Rex Chang Manayan received payments from drug or device companies?
CMS Open Payments shows $1,918 in general payments to Dr. Manayan from 9 companies from 2018 to 2025. The largest total came from Tactile Systems Technology Inc.
How long has Dr. Rex Chang Manayan been practicing?
Dr. Manayan graduated from medical school in 1991, 35 years ago.
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