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DR. WILLIAM R. LUDWIG M.D.
NPI 1952390627
Internal Medicine in Seattle, WA

Active since October 17, 2005
1200 12TH AVE S, SEATTLE, WA 98144(206) 326-2400 Get Directions Write a Review

NPPES record last updated: June 16, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. William R. Ludwig M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM R. LUDWIG M.D. (NPI 1952390627) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD00014721) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1952390627
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM R. LUDWIGCredential: M.D.
Location Address1200 12TH AVE SSeattle, WA 98144-2712
Mailing Address1200 12th Ave SSeattle, WA 98144-2712 · (206) 326-2400
Phone(206) 326-2400
Sole ProprietorNo
Enumeration DateOctober 17, 2005
Last NPPES UpdateJune 16, 2021
NPPES CertifiedJune 16, 2021
✔ NPI 1952390627 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WA · MD00014721
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1200 12TH AVE S, Seattle, WA 98144
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Other Identifiers 1

Medicaid1838903WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans.Insurance ›

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LORI L. VOS PT
Physical Therapist
1200 12TH AVE S
SEATTLE, WA 98144
King County (206) 326-2400
NONA NICULESCU M.D.
Clinic/Center (Primary Care)
1200 12TH AVE S
SEATTLE, WA 98144
King County (425) 744-7153
GINA DUNN
Dental Hygienist
1200 12TH AVE S, SUITE 901
SEATTLE, WA 98144
King County (206) 548-3114
MS. MARTY R. BABCOCK ARNP
Nurse Practitioner (Primary Care)
1200 12TH AVE S
SEATTLE, WA 98144
King County (205) 326-2400
COURTNEY KAY MEADE DPT
Physical Therapist
1200 12TH AVE S
SEATTLE, WA 98144
King County (206) 326-2400
ADRIANA LUNGU MD
Family Medicine
1200 12TH AVE S, SUITE 901
SEATTLE, WA 98144
King County (206) 548-3114
ANDRE HUANG PHARMD
Pharmacist
1200 12TH AVE S
SEATTLE, WA 98144
King County (206) 326-2400
ELIZABETH JANE KOSLOFF LICSW
Social Worker (Clinical)
1200 12TH AVE S, SUITE 901
SEATTLE, WA 98144
King County (206) 548-3114

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Ludwig's NPI number?

The NPI number for William Ludwig is 1952390627. It was assigned to this individual provider in the NPPES registry on October 17, 2005.

Where is William Ludwig located?

William Ludwig practices at 1200 12th Ave S, Seattle, WA 98144. The listed phone number is (206) 326-2400.

What is William Ludwig's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

What insurance does William Ludwig accept?

Health plans from PacificSource Health Plans list William Ludwig as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Ludwig was last updated on June 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.