Ran S. Kim, M.D.
Colon & Rectal Surgery Physician · Walnut Creek, CA
Ran S. Kim, M.D. is a colon & rectal surgery physician with a practice address in Walnut Creek, California, and NPI 1437237005, issued on Nov 1, 2006. Check the license (California G75587, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ran S. Kim
- Credential
- M.D.
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- G75587 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1399 Ygnacio Valley RD Ste 11D, Walnut Creek, CA 94598
- Phone
- (925) 430-5613
- Enumerated
- Nov 1, 2006
- Record last updated
- Apr 22, 2025
- Fax
- (510) 340-5462
- Medicare enrollment
- Enrolled (PECOS I20090217000291); accepts Medicare assignment
- Medical or professional school
- Medical College Of Pennsylvania, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 198 in California → Look up another NPI →
Also registered at 1399 Ygnacio Valley RD Ste 11D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eileen Hahn, PHYSICIAN ASSISTANTPhysician Assistant1861370264
Verify Ran S. Kim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G75587Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average colon & rectal surgery physician in 2024
284 Medicare Part D claims for 150 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 75 claims were for opioids.
Most prescribed
- Tramadol Hcl71 claims
- Sod Sulf-Potass Sulf-Mag Sulf48 claims
- Trulance25 claims
- Hydrocortisone17 claims
- Metronidazole12 claims
- Gabapentin11 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): 90.6 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: $1,130.47
23 payments; by number, the most common kind was food and beverage; the largest payer was Kerecis Limited. The 1,524 providers of this specialty with any payment received $3,468.16 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
- Bass Medical GroupAlamo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ran S. Kim among 198 colon & rectal surgery physician records in California
Ran S. Kim, M.D. is one of 198 colon & rectal surgery physician records with a practice address in California. 87% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 57% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1990 · median 2002 among the 149 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in California
There are 198 colon & rectal surgery physician records in California.
All 198 in California → Every provider in Walnut Creek → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Piyush Aggarwal, MDWalnut Creek, CA 945981700070273
- Brian McGuinness, M.D.Walnut Creek, CA 945981891870770
- Poornima Vanguri, MDWalnut Creek, CA 945981144457375
- Ahmed Alkoraishi, MDHayward, CA 945451609954478
- Doreen Jackson, MDTravis Air Force Base, CA 945351649615287
- Mark Scherrer, MDTravis Afb, CA 945351487641155
- Kim Rhoads, MDStanford, CA 943051720266539
- Andrew Shelton, M.D.Stanford, CA 943051710029681
Common questions
What is Ran S. Kim, M.D.'s NPI number?
Ran S. Kim, M.D.'s National Provider Identifier (NPI) is 1437237005, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ran S. Kim, M.D. located?
The NPPES record lists a practice address at 1399 Ygnacio Valley RD Ste 11D, Walnut Creek, CA, 94598. Phone: (925) 430-5613. Providers update this record themselves, so call before visiting.
How can I verify Ran S. Kim, M.D.'s license?
NPPES lists California license number G75587, 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 Ran S. Kim, M.D. prescribe under Medicare Part D?
In 2024, Ran S. Kim, M.D. had 284 Medicare Part D claims for 150 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
What is Ran S. Kim, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.6 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.