NPPES file of Aug 9, 2026

Shilpa Marwaha, MD

Infectious Disease Physician · Novato, CA

Shilpa Marwaha, MD is an infectious disease physician with a practice address in Novato, California, and NPI 1235396235, issued on May 19, 2008. Check the license (California A 115956, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1235396235
Name
Shilpa Marwaha
Credential
MD
Primary taxonomy
Infectious Disease Physician 207RI0200X
License numbers
A 115956 CA
0101248797 VA
Self-reported in NPPES; status is on the state search
Practice location
97 San Marin Dr, Novato, CA 94945
Phone
(415) 899-7400
Enumerated
May 19, 2008
Record last updated
Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20111013000556); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 97 San Marin Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kenneth Allen, RRT, RCPRegistered Respiratory Therapist1609346691
  2. Ziba Ansari-Jaberi, PHARM.D.Pharmacist1013001916
  3. Joanne Arauzo, PHARM DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1265756704
  4. Sanamjit Bains, RRTRegistered Respiratory Therapist1518438605
  5. Ellen Biera, RCT, RRT, RCPRegistered Respiratory Therapist1639950991
  6. Jane Burr, RNDiabetes Educator Registered Nurse1932246220

Verify Shilpa Marwaha in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A 115956
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Most of these Medicare Part D claims are vaccines, 58% of the cost of the top drugs

1,168 Medicare Part D claims for 545 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.

  1. Shilpa Marwaha1,168
  2. Specialty average689

Most prescribed

Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.

  1. Azithromycin398 claims
  2. Atovaquone-Proguanil Hcl162 claims
  3. Adacel Tdap106 claims
  4. Typhim Vi106 claims
  5. Havrix81 claims
  6. Twinrix48 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

  1. Permanente Medical Group IncVallejo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Shilpa Marwaha among 1,119 infectious disease physician records in California

Shilpa Marwaha, MD is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 59% of them.

  • NPI issued2008 · 59% of these records are older, 34% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2003 · median 2003 among the 735 with a school on file
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in California

There are 1,119 infectious disease physician records in California.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Kenneth Fife, M.D.Novato, CA 949471497711865
  2. Steven Porter, M.D., PH.D.Mill Valley, CA 949411740526524
  3. Anucheat Chea, M.D.Greenbrae, CA 949041952663635
  4. Lael Duncan, MDKentfield, CA 949041447255740
  5. Rina Marfatia, M.B.B.S., M.D.Greenbrae, CA 949041508055138
  6. Gregg Tolliver, M.D.Greenbrae, CA 949041346286465
  7. Rehan Syed, MD, MSCSan Rafael, CA 949031134653165
  8. Catherine Treseler, MDSan Rafael, CA 949031730251562

Common questions

What is Shilpa Marwaha, MD's NPI number?

Shilpa Marwaha, MD's National Provider Identifier (NPI) is 1235396235, issued on May 19, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Shilpa Marwaha, MD located?

The NPPES record lists a practice address at 97 San Marin Dr, Novato, CA, 94945. Phone: (415) 899-7400. Providers update this record themselves, so call before visiting.

How can I verify Shilpa Marwaha, MD's license?

NPPES lists California license number A 115956, 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 Shilpa Marwaha, MD prescribe under Medicare Part D?

In 2024, Shilpa Marwaha, MD had 1,168 Medicare Part D claims for 545 beneficiaries; the average among infectious disease physician prescribers was 689. 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.