Sunny Pak, M.D.
Family Medicine Physician · San Francisco, CA
Sunny Pak, M.D. is a family medicine physician with a practice address in San Francisco, California, and NPI 1891980165, issued on Sep 10, 2007. Check the license (California A113552, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sunny Pak
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A113552 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1490 Mason St, San Francisco, CA 94133
- Phone
- (415) 364-7600
- Enumerated
- Sep 10, 2007
- Record last updated
- Aug 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140207000402); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1490 Mason St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Baller, MDFamily Medicine Physician1992832984
- Jennifer Chiu, N.P.Nurse Practitioner1750500542
- Elizabeth Foy, RNCommunity Health Registered Nurse1902091200
- Betty King, MSN-FNPFamily Nurse Practitioner1083705719
- Stephanie Le, M.D.Family Medicine Physician1790129989
- Shirley Li, NPFamily Nurse Practitioner1184934408
Verify Sunny Pak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A113552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average family medicine physician in 2024
1,222 Medicare Part D claims for 129 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium141 claims
- Losartan Potassium116 claims
- Amlodipine Besylate105 claims
- Metoprolol Succinate48 claims
- Eliquis38 claims
- Furosemide36 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): 90.3 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
- City And County OF San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sunny Pak among 17,133 family medicine physician records in California
Sunny Pak, M.D. is one of 17,133 family medicine 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2009 · median 2005 among the 10,652 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Julie Baller, MDSan Francisco, CA 941331992832984
- Kwokming ChengSan Francisco, CA 941331124192158
- Paul Chu, M.D.San Francisco, CA 941331215965355
- Richard Huynh, MDSan Francisco, CA 941331386718385
- Jerry Jew, MDSan Francisco, CA 941331083899181
- Anselm Lam, M.D.San Francisco, CA 941331841386141
- Chea Leung, M.D.San Francisco, CA 941331881692176
- Rebekah Lewis, M.D.San Francisco, CA 941331366555310
Common questions
What is Sunny Pak, M.D.'s NPI number?
Sunny Pak, M.D.'s National Provider Identifier (NPI) is 1891980165, issued on Sep 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sunny Pak, M.D. located?
The NPPES record lists a practice address at 1490 Mason St, San Francisco, CA, 94133. Phone: (415) 364-7600. Providers update this record themselves, so call before visiting.
How can I verify Sunny Pak, M.D.'s license?
NPPES lists California license number A113552, 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 Sunny Pak, M.D. prescribe under Medicare Part D?
In 2024, Sunny Pak, M.D. had 1,222 Medicare Part D claims for 129 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Sunny Pak, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.3 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.