Matthew Scott Howlett, MD
Vascular & Interventional Radiology Physician · San Francisco, CA
Matthew Scott Howlett, MD is a vascular & interventional radiology physician with a practice address in San Francisco, California, and NPI 1649039066, issued on Mar 18, 2024. Check the license (California 2087584, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew Scott Howlett
- Credential
- MD
- Primary taxonomy
- Vascular & Interventional Radiology Physician 2085R0204X
- License number
- 2087584 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 476-1000
- Enumerated
- Mar 18, 2024
- Record last updated
- Aug 14, 2025
- Entity
- Type 1 · individual
8 nearest vascular & interventional radiology physician records → All 599 in California → Look up another NPI →
Also registered at 400 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daniel Adelman, M.D.Internal Medicine Physician1922041821
- Joshua Adler, MDInternal Medicine Physician1194781351
- Justin Ahn, M.D.Urology Physician1063755148
- Weiyun Ai, MDMedical Oncology Physician1649346842
Verify Matthew Scott Howlett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 2087584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average vascular & interventional radiology physician in 2024
59 Medicare Part D claims for 36 beneficiaries, against an average of 75 among the 1,444 providers of this specialty who prescribed in Part D.
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.
Matthew Scott Howlett among 599 vascular & interventional radiology physician records in California
Matthew Scott Howlett, MD is one of 599 vascular & interventional radiology 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 2024, is newer than over 99% of them.
- NPI issued2024 · over 99% of these records are older, under 1% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 83% of these records are
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular & Interventional Radiology Physician providers in California
There are 599 vascular & interventional radiology physician records in California.
All 599 in California → Every provider in San Francisco → Vascular & Interventional Radiology Physician nationwide →
The 8 vascular & interventional radiology physician records with the nearest ZIP codes
- David Avrin, M.D., PH.D.San Francisco, CA 941431932296985
- Adam Farkas, M.D.San Francisco, CA 941431871775379
- Nicholas Fidelman, M.D.San Francisco, CA 941431548387764
- Jessica Hightower, M.D.San Francisco, CA 941431619362605
- Ryan Kohlbrenner, M.D.San Francisco, CA 941431073824892
- Kanti Kolli, M.D.San Francisco, CA 941431932467065
- Vishal KumarSan Francisco, CA 941431972796332
- Jeanne Laberge, M.D.San Francisco, CA 941431952345886
Common questions
What is Matthew Scott Howlett, MD's NPI number?
Matthew Scott Howlett, MD's National Provider Identifier (NPI) is 1649039066, issued on Mar 18, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Scott Howlett, MD located?
The NPPES record lists a practice address at 400 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-1000. Providers update this record themselves, so call before visiting.
How can I verify Matthew Scott Howlett, MD's license?
NPPES lists California license number 2087584, 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 Matthew Scott Howlett, MD prescribe under Medicare Part D?
In 2024, Matthew Scott Howlett, MD had 59 Medicare Part D claims for 36 beneficiaries; the average among vascular & interventional radiology physician prescribers was 75. 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.