Allen Chinpin Chou, MD
Geriatric Medicine (Internal Medicine) Physician · Garden Grove, CA
Allen Chinpin Chou, MD is a geriatric medicine (internal medicine) physician with a practice address in Garden Grove, California, and NPI 1215919915, issued on Nov 17, 2005. Check the license (California A36505, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allen Chinpin Chou
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- A36505 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12665 Garden Grove Blvd, Garden Grove, CA 92843
- Phone
- (714) 534-2222
- Enumerated
- Nov 17, 2005
- Record last updated
- Feb 4, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (714) 534-0818
- Medicaid ID
- 00A365050 CA
- Medicare enrollment
- Enrolled (PECOS I20101104001016); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 12665 Garden Grove Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mumtaz Ali, M.DSpecialist1700849049
- James Boyce, M.D.Ophthalmology Physician1457351652
- Douglas Clark, M.D.Internal Medicine Physician1780688572
- Naveen Dhar, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1871604116
- Usha Dhar, M.D.Family Medicine Physician1699886846
- Said El-Zayat, M.D.Family Medicine Physician1215042866
Verify Allen Chinpin Chou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A36505Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
3,923 Medicare Part D claims for 317 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 54 claims were for opioids.
Most prescribed
- Atorvastatin Calcium327 claims
- Losartan Potassium242 claims
- Amlodipine Besylate210 claims
- Metformin Hcl204 claims
- Celecoxib122 claims
- Omeprazole113 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.
Industry payments in 2024: $40.54
2 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. The 1,004 providers of this specialty with any payment received $1,720.82 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
- Pathway Medical Group IncWestminster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allen Chinpin Chou among 532 geriatric medicine (internal medicine) physician records in California
Allen Chinpin Chou, MD is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated1975 · median 1999 among the 271 with a school on file
- Record last updated2014 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Garden Grove → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Chaewon Song, MDGarden Grove, CA 928431972589687
- Giselle Seron, MDGarden Grove, CA 928441790858900
- Shashidar Acharya, M.D.Orange, CA 928661770685521
- Robert Buster, M.D.Orange, CA 928681841343076
- Mary Harward, M.D.Orange, CA 928681407835275
- Kassandra King, DOOrange, CA 928681215498936
- K.a. Manisha PereraOrange, CA 928681952783862
- Angela Tan, MDOrange, CA 928681437358173
Common questions
What is Allen Chinpin Chou, MD's NPI number?
Allen Chinpin Chou, MD's National Provider Identifier (NPI) is 1215919915, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Allen Chinpin Chou, MD located?
The NPPES record lists a practice address at 12665 Garden Grove Blvd, Garden Grove, CA, 92843. Phone: (714) 534-2222. Providers update this record themselves, so call before visiting.
How can I verify Allen Chinpin Chou, MD's license?
NPPES lists California license number A36505, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allen Chinpin Chou, MD prescribe under Medicare Part D?
In 2024, Allen Chinpin Chou, MD had 3,923 Medicare Part D claims for 317 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
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.