William Henry Ludlam, PHD, MD
Endocrinology, Diabetes & Metabolism Physician · Seattle, WA
William Henry Ludlam, PHD, MD is an endocrinology, diabetes & metabolism physician with a practice address in Seattle, Washington, and NPI 1750464848, issued on Oct 23, 2006. Check the license on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Henry Ludlam
- Credential
- PHD, MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- MD21441 OR
Self-reported in NPPES; status is on the state search - Practice location
- 550 17TH Ave Ste 500, Seattle, WA 98122
- Phone
- (206) 320-2800
- Enumerated
- Oct 23, 2006
- Record last updated
- Oct 10, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid IDs
- 229308 OR
8472862 WA - Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 224 in Washington → Look up another NPI →
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Verify William Henry Ludlam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical CommissionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Henry Ludlam among 224 endocrinology, diabetes & metabolism physician records in Washington
William Henry Ludlam, PHD, MD is one of 224 endocrinology, diabetes & metabolism physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Washington
There are 224 endocrinology, diabetes & metabolism physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 224 in Washington → Every provider in Seattle → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Maureen Marshall, M.D.Seattle, WA 981221275500324
- Anthony OkosSeattle, WA 981221427137181
- Robert Kanter, M.D.Seattle, WA 981251205874955
- Nancy Niles, M.D.Seattle, WA 981251144258435
- David McCulloch, M.D.Seattle, WA 981121679626766
- Emily Omura, M.D.Seattle, WA 981121043537699
- Rakesh Popli, MDSeattle, WA 981121063874121
- Avantika Waring, MDSeattle, WA 981121265595821
Common questions
What is William Henry Ludlam, PHD, MD's NPI number?
William Henry Ludlam, PHD, MD's National Provider Identifier (NPI) is 1750464848, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Henry Ludlam, PHD, MD located?
The NPPES record lists a practice address at 550 17TH Ave Ste 500, Seattle, WA, 98122. Phone: (206) 320-2800. Providers update this record themselves, so call before visiting.
How can I verify William Henry Ludlam, PHD, MD's license?
Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. 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. 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.