Richard Sung Ahn, M.D.
Orthopaedic Hand Surgery Physician · Lakewood, CA
Richard Sung Ahn, M.D. is an orthopaedic hand surgery physician with a practice address in Lakewood, California, and NPI 1568809226, issued on Jun 3, 2013. Check the license (California A162729, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard Sung Ahn
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Hand Surgery Physician 207XS0106X
- License number
- A162729 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5750 Downey Ave Ste 308, Lakewood, CA 90712
- Phone
- (562) 633-3787
- Enumerated
- Jun 3, 2013
- Record last updated
- Mar 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (562) 633-1977
- Medicare enrollment
- Enrolled (PECOS I20190802000801); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest orthopaedic hand surgery physician records → All 288 in California → Look up another NPI →
Also registered at 5750 Downey Ave Ste 308
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Combs, M.D.Orthopaedic Surgery Physician1205925468
- Jason JanoianSurgical Physician Assistant1750859302
- Margo Royer, RNNurse Practitioner1245046424
- Justin Stafford, D.O.Orthopaedic Surgery Physician1215551205
- Zachary Stone, PA-CSurgical Physician Assistant1063058436
- Andrew Wassef, M.D.Orthopaedic Surgery Physician1982848099
Verify Richard Sung Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A162729Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% more Medicare Part D claims than the average orthopaedic hand surgery physician in 2024
365 Medicare Part D claims for 260 beneficiaries, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. 249 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen118 claims
- Oxycodone-Acetaminophen115 claims
- Diclofenac Sodium29 claims
- Meloxicam23 claims
- Cephalexin14 claims
- Tramadol Hcl14 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 MIPS final score for 2023 (Medicare payment program): 88.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $33.96
1 payment: food and beverage; the largest payer was Pacira Pharmaceuticals Incorporated. The 1,819 providers of this specialty with any payment received $5,529.86 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
- Commons Clinic Medical Group, PCMarina Del Rey, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Richard Sung Ahn among 288 orthopaedic hand surgery physician records in California
Richard Sung Ahn, M.D. is one of 288 orthopaedic hand surgery physician records with a practice address in California. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 79% of them.
- NPI issued2013 · 79% of these records are older, 17% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2013 · median 2004 among the 214 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0106X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Hand Surgery Physician providers in California
There are 288 orthopaedic hand surgery physician records in California.
All 288 in California → Every provider in Lakewood → Orthopaedic Hand Surgery Physician nationwide →
The 8 orthopaedic hand surgery physician records with the nearest ZIP codes
- Anna Acosta, M.D.Long Beach, CA 908041285933424
- Kourosh Kolahi, M.D.Long Beach, CA 908071700143104
- George Macer, M.D.Long Beach, CA 908071871699462
- Ross Nathan, MDLong Beach, CA 908071013957679
- Stewart Brown, M.D.Long Beach, CA 908151811086077
- Daniel Lee, MDWhittier, CA 906021659533115
- Andrew Lim, M.D.Torrance, CA 905051457468738
- Jerome Unatin, M.D.Torrance, CA 905051619084969
Common questions
What is Richard Sung Ahn, M.D.'s NPI number?
Richard Sung Ahn, M.D.'s National Provider Identifier (NPI) is 1568809226, issued on Jun 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Richard Sung Ahn, M.D. located?
The NPPES record lists a practice address at 5750 Downey Ave Ste 308, Lakewood, CA, 90712. Phone: (562) 633-3787. Providers update this record themselves, so call before visiting.
How can I verify Richard Sung Ahn, M.D.'s license?
NPPES lists California license number A162729, 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 Richard Sung Ahn, M.D. prescribe under Medicare Part D?
In 2024, Richard Sung Ahn, M.D. had 365 Medicare Part D claims for 260 beneficiaries; the average among orthopaedic hand surgery physician prescribers was 186. Part D covers Medicare prescriptions only.
What is Richard Sung Ahn, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.3 of 100. 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.