Benjamin J. Lee, MD, MAS
Nephrology Physician · San Francisco, CA
Benjamin J. Lee, MD, MAS is a nephrology physician with a practice address in San Francisco, California, and NPI 1194091199, issued on Mar 24, 2012. Check the license (California A127737, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin J. Lee
- Credential
- MD, MAS
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- A127737 CA
R6224 TX
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave # B1, San Francisco, CA 94143
- Phone
- (415) 353-2507
- Enumerated
- Mar 24, 2012
- Record last updated
- Apr 15, 2026
- Medicare enrollment
- Enrolled (PECOS I20180720002484); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 400 Parnassus Ave # B1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Breeggemann, M.D.Nephrology Physician1083077549
- Tara Liwag, NPNurse Practitioner1285363846
- Gabriel Loeb, M.D., PH.D.Nephrology Physician1649651647
Verify Benjamin J. Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A127737Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average nephrology physician in 2024
1,030 Medicare Part D claims for 224 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Jardiance78 claims
- Lokelma78 claims
- Losartan Potassium75 claims
- Veltassa68 claims
- Furosemide67 claims
- Nifedipine Er60 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): 89 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).
Industry payments in 2024: $44.89
1 payment: food and beverage; the largest payer was Kerecis Limited. The 8,230 providers of this specialty with any payment received $3,091.37 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 2 group practices
- Houston Methodist Specialty PhysiciansHouston, TX
- Tmh Physician Associates PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
Other nephrology physician records in California
- Antoine Abcar, MDLos Angeles, CA1245301159
- Basmah Abdalla, M.D.Los Angeles, CA1629394002
- Omaran Abdeen, M.D.Mission Hills, CA1700878410
- Joseph Abdelmalek, M.DSan Diego, CA1740485531
- Lama Abdelnour, MDLos Angeles, CA1477817542
- Amir Abdi Pour, MDLoma Linda, CA1912187477
- Anas Abou-Ismail, MDPalm Springs, CA1598078784
- Graham Abra, M.D.Stanford, CA1760644678
- Sreedhar Adapa, M.D.Visalia, CA1881997872
- Gbemisola Adenuga, M.D.Los Angeles, CA1952464661
Common questions
What is Benjamin J. Lee, MD, MAS's NPI number?
Benjamin J. Lee, MD, MAS's National Provider Identifier (NPI) is 1194091199, issued on Mar 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin J. Lee, MD, MAS located?
The NPPES record lists a practice address at 400 Parnassus Ave # B1, San Francisco, CA, 94143. Phone: (415) 353-2507. Providers update this record themselves, so call before visiting.
How can I verify Benjamin J. Lee, MD, MAS's license?
NPPES lists California license number A127737, 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 Benjamin J. Lee, MD, MAS prescribe under Medicare Part D?
In 2024, Benjamin J. Lee, MD, MAS had 1,030 Medicare Part D claims for 224 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Benjamin J. Lee, MD, MAS's MIPS final score?
The 2023 MIPS final score is 89 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.