John Michael Halphen, M.D.
Geriatric Medicine (Family Medicine) Physician · Bellaire, TX
John Michael Halphen, M.D. is a geriatric medicine (family medicine) physician with a practice address in Bellaire, Texas, and NPI 1639289978, issued on Aug 30, 2006. Check the license (Texas K3583, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Michael Halphen
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- K3583 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6500 West Loop S Ste 200, Bellaire, TX 77401
- Phone
- (713) 468-5150
- Enumerated
- Aug 30, 2006
- Record last updated
- Jun 7, 2025
- Medicaid ID
- 096577403 TX
- Medicare enrollment
- Enrolled (PECOS I20080423000230); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1995
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 121 in Texas → Look up another NPI →
Also registered at 6500 West Loop S Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robin Beach, FNPFamily Nurse Practitioner1316970379
- McKenzie Dileo, MDStudent in an Organized Health Care Education/Training Program1669276457
- Hannah Downing, RDN, LDRegistered Dietitian1043010937
- Gabriela Gardner, RD-AP, LD, CNSCRegistered Dietitian1407492317
- Joshua Janson, M.S., RDN, LDNMetabolic Nutrition Registered Dietitian1285360594
- Victoria Katei, MDStudent in an Organized Health Care Education/Training Program1184427304
Verify John Michael Halphen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K3583Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
757 Medicare Part D claims for 104 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 13 claims were for opioids.
Most prescribed
- Losartan Potassium38 claims
- Sertraline Hcl36 claims
- Tamsulosin Hcl36 claims
- Atorvastatin Calcium35 claims
- Levothyroxine Sodium33 claims
- Gabapentin29 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- UT PhysiciansHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Michael Halphen among 121 geriatric medicine (family medicine) physician records in Texas
John Michael Halphen, M.D. is one of 121 geriatric medicine (family medicine) physician records with a practice address in Texas. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 55% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1995 · median 2004 among the 71 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Family Medicine) Physician providers in Texas
There are 121 geriatric medicine (family medicine) physician records in Texas.
All 121 in Texas → Every provider in Bellaire → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Dana Giza, M.D.Bellaire, TX 774011265968986
- Daima Ratcliff, M.D.The Woodlands, TX 773841548423205
- Jose Raul Rodriguez, M.D.Spring, TX 773811376503078
- Anita Alvarez-Cruz, M.D.Katy, TX 774501235297409
- Faith Atai, M.DMissouri City, TX 774591023347358
- Candance Johnson, FNPMissouri City, TX 774591821332412
- Mohammad Alam, MDSugar Land, TX 774791669535357
- Owen Capocyan, M.D.Sugar Land, TX 774791063695328
Common questions
What is John Michael Halphen, M.D.'s NPI number?
John Michael Halphen, M.D.'s National Provider Identifier (NPI) is 1639289978, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Michael Halphen, M.D. located?
The NPPES record lists a practice address at 6500 West Loop S Ste 200, Bellaire, TX, 77401. Phone: (713) 468-5150. Providers update this record themselves, so call before visiting.
How can I verify John Michael Halphen, M.D.'s license?
NPPES lists Texas license number K3583, 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 John Michael Halphen, M.D. prescribe under Medicare Part D?
In 2024, John Michael Halphen, M.D. had 757 Medicare Part D claims for 104 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. Part D covers Medicare prescriptions only.
What is John Michael Halphen, M.D.'s MIPS final score?
The 2023 MIPS final score is 82.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.