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PAUL D. WETZEL, M.D. INC
NPI 1609975325
Internal Medicine - Gastroenterology in San Luis Obispo, CA

Active since September 21, 2006
1551 BISHOP ST STE 430, SAN LUIS OBISPO, CA 93401(805) 261-1044(805) 250-7452 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 14, 2026, Jul 7, 2026, Mar 11, 2022 and 1 more (4 updates tracked since 2016).

About Paul D. Wetzel, M.d. Inc NPPES

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

PAUL D. WETZEL, M.D. INC (NPI 1609975325), doing business as San Luis Gastroenterology, is a healthcare organization registered as a gastroenterology in San Luis Obispo, California and active in the NPI registry since September 2006. The organization lists Paul Daniel Wetzel, Owner/president, as its authorized official.

NPPES Registry Identity

NPI1609975325
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NamePAUL D. WETZEL, M.D. INC
Location Address1551 BISHOP ST STE 430San Luis Obispo, CA 93401-4663
Mailing Address1551 Bishop St Ste 430San Luis Obispo, CA 93401-4663 · (805) 541-8129 · Fax (805) 364-3290
Phone(805) 261-1044
Fax(805) 250-7452
Organization SubpartNo
Authorized OfficialPaul Daniel WetzelOwner/president · (805) 215-9594
Enumeration DateSeptember 21, 2006
Last NPPES UpdateJuly 14, 20264 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1609975325 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1551 BISHOP ST STE 430, San Luis Obispo, CA 93401
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Other Names 1

Doing Business AsSan Luis Gastroenterology

Other Identifiers 1

OtherWA71477BCA · Ppin

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Paul D. Wetzel, M.d. Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Paul D. Wetzel, M.D. Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Paul Wetzel, M.D.
Gastroenterology
NPI 1366427221
1551 BISHOP ST STE 430
San Luis Obispo, CA 93401
(805) 261-1044
✔ PECOS✔ Accepts MedicareSame address
Jennifer Zambo, N.P.
Nurse Practitioner
NPI 1932319225
1551 BISHOP ST STE 430
San Luis Obispo, CA 93401
(805) 261-1044
✔ PECOS✔ Accepts MedicareSame address
Jonathan Riegler, MD
Gastroenterology
NPI 1184725707
350 POSADA LN STE 202
Templeton, CA 93465
(805) 434-5497
✔ PECOS✔ Accepts Medicare20 mi
Russ Arjal, MD
Gastroenterology
NPI 1821144403
134 PUUHONU WAY
Hilo, HI 96720
(808) 969-3979
✔ PECOS✔ Accepts Medicare2,354 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Paul D. Wetzel, M.D. Inc's NPI number?

The NPI number for Paul D. Wetzel, M.D. Inc is 1609975325. It was assigned to this organization in the NPPES registry on September 21, 2006. The provider is doing business as San Luis Gastroenterology.

Where is Paul D. Wetzel, M.D. Inc located?

Paul D. Wetzel, M.D. Inc is located at 1551 Bishop St Ste 430, San Luis Obispo, CA 93401. The listed phone number is (805) 261-1044.

What is Paul D. Wetzel, M.D. Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Paul D. Wetzel, M.D. Inc enrolled in Medicare?

Yes. Paul D. Wetzel, M.D. Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Paul D. Wetzel, M.D. Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Paul D. Wetzel, M.D. Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Gastroenterology (3) and Nurse Practitioner (1). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Paul D. Wetzel, M.D. Inc was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.