Lynn Westphal, MD
Reproductive Endocrinology Physician · Los Altos, CA
Lynn Westphal, MD is a reproductive endocrinology physician with a practice address in Los Altos, California, and NPI 1134269723, issued on Feb 6, 2007. Check the license (California G63611, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lynn Westphal
- Credential
- MD
- Primary taxonomy
- Reproductive Endocrinology Physician 207VE0102X
- License numbers
- G63611 CA
E-15059 AR
CDRH.0066417 CO
MD210001754 DC
ME150714 FL
and 10 more
Self-reported in NPPES; status is on the state search - Practice location
- 4756 EL Camino Real, Los Altos, CA 94022
- Phone
- (650) 445-4724
- Enumerated
- Feb 6, 2007
- Record last updated
- May 23, 2024
- Entity
- Type 1 · individual
8 nearest reproductive endocrinology physician records → All 267 in California → Look up another NPI →
Also registered at 4756 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ramya Sethuram, MDReproductive Endocrinology Physician1396123550
Verify Lynn Westphal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G63611Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $204.97
5 payments; by number, the most common kind was food and beverage; the largest payer was Emd Serono, Inc. The 1,066 providers of this specialty with any payment received $1,086.52 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Lynn Westphal among 267 reproductive endocrinology physician records in California
Lynn Westphal, MD is one of 267 reproductive endocrinology physician records with a practice address in California. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 36% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 10% of these records are
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VE0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Reproductive Endocrinology Physician providers in California
There are 267 reproductive endocrinology physician records in California.
All 267 in California → Every provider in Los Altos → Reproductive Endocrinology Physician nationwide →
The 8 reproductive endocrinology physician records with the nearest ZIP codes
- Ramya Sethuram, MDLos Altos, CA 940221396123550
- Deborah Metzger, PHD, MDLos Altos, CA 940241780602813
- Li-Shei Lin, MDMenlo Park, CA 940251235287020
- Angela Liu, M.D.Menlo Park, CA 940251346772597
- Benjamin Peipert, MDMenlo Park, CA 940251578928545
- Geoffrey Adamson, M.D.Mountain View, CA 940401780781690
- Anna Sokalska, MD, PHDMountain View, CA 940401881954436
- Isiah Harris, MDRedwood City, CA 940631184757080
Common questions
What is Lynn Westphal, MD's NPI number?
Lynn Westphal, MD's National Provider Identifier (NPI) is 1134269723, issued on Feb 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lynn Westphal, MD located?
The NPPES record lists a practice address at 4756 EL Camino Real, Los Altos, CA, 94022. Phone: (650) 445-4724. Providers update this record themselves, so call before visiting.
How can I verify Lynn Westphal, MD's license?
NPPES lists California license number G63611, 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.
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.