Erica Weirich, MD
Family Medicine Physician · Palo Alto, CA
Erica Weirich, MD is a family medicine physician with a practice address in Palo Alto, California, and NPI 1700978400, issued on Sep 29, 2006. Check the license (California A70387, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erica Weirich
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A70387 CA
Self-reported in NPPES; status is on the state search - Practice location
- 49 Wells Ave, Palo Alto, CA 94301
- Phone
- (650) 614-3299
- Enumerated
- Sep 29, 2006
- Record last updated
- Mar 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081110000656); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 49 Wells Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Salwan Abiezzi, M.D.Internal Medicine Physician1427163393
- Aihua Hu, NP-CFamily Nurse Practitioner1265726426
- Teresa Nauenberg, MDInternal Medicine Physician1407963382
- Hugo Yang, MDInternal Medicine Physician1053428821
Verify Erica Weirich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70387Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average family medicine physician in 2024
1,359 Medicare Part D claims for 117 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Atorvastatin Calcium81 claims
- Rosuvastatin Calcium62 claims
- Levothyroxine Sodium55 claims
- Duloxetine Hcl33 claims
- Amlodipine Besylate31 claims
- Losartan Potassium31 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
- Sutter Bay Medical FoundationPalo Alto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erica Weirich among 17,133 family medicine physician records in California
Erica Weirich, MD is one of 17,133 family medicine 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1998 · median 2005 among the 10,652 with a school on file
- Record last updated2020 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
85 family medicine physician records list a practice address in Palo Alto
They are 85 of the 7,617 NPPES records with a practice address in Palo Alto, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Palo Alto → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Eileen Byrne, MDPalo Alto, CA 943011124030341
- Manjushree Deshpande, M.D.Palo Alto, CA 943011588621668
- Jennifer Falk, MDPalo Alto, CA 943011245203116
- Elizabeth Finigan, MDPalo Alto, CA 943011780610048
- Steven Hansen, M.D.Palo Alto, CA 943011912910076
- Mary Hufty, M.D.Palo Alto, CA 943011053324145
- Steve Lane, MDPalo Alto, CA 943011831178250
- Richard Lee, MDPalo Alto, CA 943011285625236
Common questions
What is Erica Weirich, MD's NPI number?
Erica Weirich, MD's National Provider Identifier (NPI) is 1700978400, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Erica Weirich, MD located?
The NPPES record lists a practice address at 49 Wells Ave, Palo Alto, CA, 94301. Phone: (650) 614-3299. Providers update this record themselves, so call before visiting.
How can I verify Erica Weirich, MD's license?
NPPES lists California license number A70387, 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 Erica Weirich, MD prescribe under Medicare Part D?
In 2024, Erica Weirich, MD had 1,359 Medicare Part D claims for 117 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.