Joanna Marguerite Hellmuth, MD, MHS
Neurology Physician · San Francisco, CA
Joanna Marguerite Hellmuth, MD, MHS is a neurology physician with a practice address in San Francisco, California, and NPI 1497073001, issued on May 6, 2010. Check the license (California A121554, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joanna Marguerite Hellmuth
- Credential
- MD, MHS
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- A121554 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2351 Clay Street, San Francisco, CA 94118
- Phone
- (415) 660-3954
- Enumerated
- May 6, 2010
- Record last updated
- Jul 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 2351 Clay Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer PonsStudent in an Organized Health Care Education/Training Program1790105856
Verify Joanna Marguerite Hellmuth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A121554Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average neurology physician in 2024
11 Medicare Part D claims, against an average of 1,370 among the 15,005 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.
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).
Joanna Marguerite Hellmuth among 2,339 neurology physician records in California
Joanna Marguerite Hellmuth, MD, MHS is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 61% of them.
- NPI issued2010 · 61% of these records are older, 36% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2019 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in San Francisco → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- John BestSan Francisco, CA 941181871955476
- Chau Chien, MDSan Francisco, CA 941181578503462
- Pressley Chakales, MDSan Francisco, CA 941171093344988
- Mary Genevieve, M.D.San Francisco, CA 941171871598706
- Sheetal Hegde, MDSan Francisco, CA 941171689203010
- William Jagust, MDSan Francisco, CA 941171265765622
- Jaehyun Kim, M.D.San Francisco, CA 941171639602618
- Donald Kitt, M.D.San Francisco, CA 941171477641090
Common questions
What is Joanna Marguerite Hellmuth, MD, MHS's NPI number?
Joanna Marguerite Hellmuth, MD, MHS's National Provider Identifier (NPI) is 1497073001, issued on May 6, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Marguerite Hellmuth, MD, MHS located?
The NPPES record lists a practice address at 2351 Clay Street, San Francisco, CA, 94118. Phone: (415) 660-3954. Providers update this record themselves, so call before visiting.
How can I verify Joanna Marguerite Hellmuth, MD, MHS's license?
NPPES lists California license number A121554, 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 Joanna Marguerite Hellmuth, MD, MHS prescribe under Medicare Part D?
In 2024, Joanna Marguerite Hellmuth, MD, MHS had 11 Medicare Part D claims; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Joanna Marguerite Hellmuth, MD, MHS'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.