Michael T. Sim, M.D.
Nephrology Physician · Sacramento, CA
Michael T. Sim, M.D. is a nephrology physician with a practice address in Sacramento, California, and NPI 1811972771, issued on Dec 13, 2005. Check the license (California A86300, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael T. Sim
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A86300 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6600 Bruceville RD, Sacramento, CA 95823
- Phone
- (916) 688-6988
- Enumerated
- Dec 13, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (916) 688-6507
- Medicare enrollment
- Enrolled (PECOS I20040830000340); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 6600 Bruceville RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rola Aboueljoud, DPTPhysical Therapist1275241986
- Fatima Abutin, M.DHospitalist Physician1740558451
- Chelsea Adams, DPTPhysical Therapist1215324645
- Jacob Adams, MDPsychiatry Physician1326126822
Verify Michael T. Sim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A86300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average nephrology physician in 2024
1,098 Medicare Part D claims for 183 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Calcitriol141 claims
- Amlodipine Besylate92 claims
- Jardiance77 claims
- Furosemide67 claims
- Tamsulosin Hcl45 claims
- Losartan Potassium42 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.
Bills Medicare through one group practice
- Regents OF The Univ OF CASacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael T. Sim among 1,468 nephrology physician records in California
Michael T. Sim, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% 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, 90% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2001 · median 2001 among the 1,128 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Sacramento → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Kai-Ting Hu, MDSacramento, CA 958231831203900
- Ushir Patel, M.D.Sacramento, CA 958231285936757
- Vijay Rathore, MDSacramento, CA 958231922186667
- Tariq Shaheed, D.O.Sacramento, CA 958231467802546
- Nick Youssefi, D.O.Sacramento, CA 958231518259415
- Syed Ali, M.D.Sacramento, CA 958251376799858
- Anthony Alvarado, MDSacramento, CA 958251497906374
- James Gehrig, MDSacramento, CA 958251619049434
Common questions
What is Michael T. Sim, M.D.'s NPI number?
Michael T. Sim, M.D.'s National Provider Identifier (NPI) is 1811972771, issued on Dec 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael T. Sim, M.D. located?
The NPPES record lists a practice address at 6600 Bruceville RD, Sacramento, CA, 95823. Phone: (916) 688-6988. Providers update this record themselves, so call before visiting.
How can I verify Michael T. Sim, M.D.'s license?
NPPES lists California license number A86300, 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 Michael T. Sim, M.D. prescribe under Medicare Part D?
In 2024, Michael T. Sim, M.D. had 1,098 Medicare Part D claims for 183 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.