Hang Xuan Munsayac, M.D.
Internal Medicine Physician · Houston, TX
Hang Xuan Munsayac, M.D. is an internal medicine physician with a practice address in Houston, Texas, and NPI 1538314331, issued on Nov 20, 2008. Check the license (Texas P0103, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Hang Xuan Munsayac
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- P0103 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1701 Sunset Blvd, Houston, TX 77005
- Phone
- (713) 526-5511
- Enumerated
- Nov 20, 2008
- Record last updated
- Feb 9, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (713) 520-4755
- Medicare enrollment
- Enrolled (PECOS I20110921000605); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 1701 Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hang Xuan Munsayac in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P0103Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% more Medicare Part D claims than the average internal medicine physician in 2024
4,959 Medicare Part D claims for 507 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 42 claims were for opioids.
Most prescribed
- Atorvastatin Calcium298 claims
- Levothyroxine Sodium296 claims
- Amlodipine Besylate259 claims
- Losartan Potassium167 claims
- Pravastatin Sodium165 claims
- Rosuvastatin Calcium152 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $308.81
16 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Medical Clinic OF Houston, LLPHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hang Xuan Munsayac among 9,175 internal medicine physician records in Texas
Hang Xuan Munsayac, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2004 among the 6,088 with a school on file
- Record last updated2016 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Finnila, MDHouston, TX 770051306823869
- Raymond Hamill, MDHouston, TX 770051376520833
- Karen Hoermann, MDHouston, TX 770051437136900
- Bhakti Khatri, MDHouston, TX 770051043297518
- Matthew Lenz, MDHouston, TX 770051023095593
- Jonathan Magid, MDHouston, TX 770051114904687
- Jennifer Meyer, MDHouston, TX 770051295712768
- Christopher Nevins, MDHouston, TX 770051376520841
Common questions
What is Hang Xuan Munsayac, M.D.'s NPI number?
Hang Xuan Munsayac, M.D.'s National Provider Identifier (NPI) is 1538314331, issued on Nov 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Hang Xuan Munsayac, M.D. located?
The NPPES record lists a practice address at 1701 Sunset Blvd, Houston, TX, 77005. Phone: (713) 526-5511. Providers update this record themselves, so call before visiting.
How can I verify Hang Xuan Munsayac, M.D.'s license?
NPPES lists Texas license number P0103, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Hang Xuan Munsayac, M.D. prescribe under Medicare Part D?
In 2024, Hang Xuan Munsayac, M.D. had 4,959 Medicare Part D claims for 507 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Hang Xuan Munsayac, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.