Ari Benjamin Molofsky, MD, PHD
Clinical Pathology/Laboratory Medicine Physician · San Francisco, CA
Ari Benjamin Molofsky, MD, PHD is a clinical pathology/laboratory medicine physician with a practice address in San Francisco, California, and NPI 1104151984, issued on Oct 12, 2009. Check the license (California A107555, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ari Benjamin Molofsky
- Credential
- MD, PHD
- Primary taxonomy
- Clinical Pathology/Laboratory Medicine Physician 207ZP0105X
- License number
- A107555 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 443-0048
- Enumerated
- Oct 12, 2009
- Record last updated
- Oct 12, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110615000128); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest clinical pathology/laboratory medicine physician records → All 131 in California → Look up another NPI →
Also registered at 505 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexander Aabedi, MDStudent in an Organized Health Care Education/Training Program1245971480
- Kathryn Aaronson, RN, CPNPPediatric Nurse Practitioner1992030951
- Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
- Abul Abbas, MBBSAnatomic Pathology Physician1881652964
- Jesse Abelson, MDInternal Medicine Physician1083843817
- Rhonald AbitonaAcute Care Nurse Practitioner1164993473
Verify Ari Benjamin Molofsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A107555Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 74.5 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
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ari Benjamin Molofsky among 131 clinical pathology/laboratory medicine physician records in California
Ari Benjamin Molofsky, MD, PHD is one of 131 clinical pathology/laboratory medicine physician records with a practice address in California. 36% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 36% of these records are
- In the CMS Doctors and Clinicians fileYes · 31% of these records are
- Graduated2007 · median 1998 among the 40 with a school on file
- Record last updated2009 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0105X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Pathology/Laboratory Medicine Physician providers in California
There are 131 clinical pathology/laboratory medicine physician records in California.
All 131 in California → Every provider in San Francisco → Clinical Pathology/Laboratory Medicine Physician nationwide →
The 8 clinical pathology/laboratory medicine physician records with the nearest ZIP codes
- Jayanta Debnath, MDSan Francisco, CA 941431558314211
- Anne Deucher, MD, PHDSan Francisco, CA 941431558696039
- Shane Falcinelli, MDSan Francisco, CA 941431962255067
- Yuet Kan, M.D.San Francisco, CA 941431194761809
- Elham Khanafshar, MDSan Francisco, CA 941431235196296
- Morvarid Moayeri, M.D., PH.D.San Francisco, CA 941431366777443
- David Park, M.D., PH.D.San Francisco, CA 941431396928040
- Erron Titus, MD, PHDSan Francisco, CA 941431841828134
Common questions
What is Ari Benjamin Molofsky, MD, PHD's NPI number?
Ari Benjamin Molofsky, MD, PHD's National Provider Identifier (NPI) is 1104151984, issued on Oct 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Ari Benjamin Molofsky, MD, PHD located?
The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 443-0048. Providers update this record themselves, so call before visiting.
How can I verify Ari Benjamin Molofsky, MD, PHD's license?
NPPES lists California license number A107555, 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.
What is Ari Benjamin Molofsky, MD, PHD's MIPS final score?
The 2023 MIPS final score is 74.5 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.