David D. Oh, M.D.
Rheumatology Physician · Torrance, CA
David D. Oh, M.D. is a rheumatology physician with a practice address in Torrance, California, and NPI 1366549255, issued on Sep 20, 2006. Check the license (California A044047, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David D. Oh
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A044047 CA
Self-reported in NPPES; status is on the state search - Practice location
- 21350 Hawthorne Blvd Ste 260, Torrance, CA 90503
- Phone
- (310) 543-2977
- Enumerated
- Sep 20, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 543-3147
- Medicare enrollment
- Enrolled (PECOS I20031125000561); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Verify David D. Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A044047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.0 times the Medicare Part D claims of the average rheumatology physician in 2024
13,872 Medicare Part D claims for 733 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 70 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,438 claims
- Amlodipine Besylate1,088 claims
- Losartan Potassium671 claims
- Metformin Hcl457 claims
- Levothyroxine Sodium406 claims
- Januvia349 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: $110.92
5 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 4,486 providers of this specialty with any payment received $8,538.33 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.
David D. Oh among 926 rheumatology physician records in California
David D. Oh, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1983 · median 2003 among the 641 with a school on file
- Record last updated2007 · 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 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Torrance → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Morteza Azimian, M.D.Torrance, CA 905031295940229
- Steve Aziz, M.D.Torrance, CA 905031982966271
- Michael Duffin, M.D.Torrance, CA 905031578587309
- Viet Bui, MD, PHDTorrance, CA 905021396092227
- William Chin, M.D.Torrance, CA 905021790995769
- Dilrukshie Cooray, M.D.Torrance, CA 905021366548646
- George Karpouzas, M.D.Torrance, CA 905021154384303
- Michael Liebling, M.D.Torrance, CA 905021386691376
Common questions
What is David D. Oh, M.D.'s NPI number?
David D. Oh, M.D.'s National Provider Identifier (NPI) is 1366549255, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David D. Oh, M.D. located?
The NPPES record lists a practice address at 21350 Hawthorne Blvd Ste 260, Torrance, CA, 90503. Phone: (310) 543-2977. Providers update this record themselves, so call before visiting.
How can I verify David D. Oh, M.D.'s license?
NPPES lists California license number A044047, 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 David D. Oh, M.D. prescribe under Medicare Part D?
In 2024, David D. Oh, M.D. had 13,872 Medicare Part D claims for 733 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.