DANIEL R CONLIN M D & ROBERT J ELSEN M D A MEDICAL CORPORATION
NPI 1568577955
Internal Medicine - Gastroenterology in San Francisco, CA

Q: What is Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation's specialty?

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

Active since August 19, 2006

2100 WEBSTER ST STE 315, SAN FRANCISCO, CA 94115(415) 923-3320(415) 885-6748 Get Directions Write a Review

NPPES record last updated: August 7, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation NPPES

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

DANIEL R CONLIN M D & ROBERT J ELSEN M D A MEDICAL CORPORATION (NPI 1568577955) is a healthcare organization registered as a gastroenterology in San Francisco, California and active in the NPI registry since August 2006. The organization lists Robert J. Elsen, General Partner, as its authorized official.

NPPES Registry Identity

NPI1568577955

Entity TypeOrganization

Primary Taxonomy207RG0100X

Legal Business NameDANIEL R CONLIN M D & ROBERT J ELSEN M D A MEDICAL CORPORATION

Location Address2100 WEBSTER ST STE 315San Francisco, CA 94115-2377

Mailing AddressPo Box 103887Pasadena, CA 91189-3887

Phone(415) 923-3320

Fax(415) 885-6748

Organization SubpartNo

Authorized OfficialRobert J. ElsenGeneral Partner · (415) 863-5272

Enumeration DateAugust 19, 2006

Last NPPES UpdateAugust 7, 2024

NPPES CertifiedAugust 7, 2024

✔ NPI 1568577955 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · G71096

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.

2100 WEBSTER ST STE 315, San Francisco, CA 94115

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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)

Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Robert Elsen, M.D.

Gastroenterology

NPI 1639212624

45 CASTRO ST STE 437
San Francisco, CA 94114

(415) 469-0643

✔ PECOS✔ Accepts Medicare1.5 mi

Daniel Conlin, M.D.

Gastroenterology

NPI 1952439713

1141 PEAR TREE LN SUITE 100
Napa, CA 94558

(707) 254-1774

✔ PECOS✔ Accepts Medicare37 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 Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation's NPI number?

The NPI number for Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation is 1568577955. It was assigned to this organization in the NPPES registry on August 19, 2006.

Where is Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation located?

Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation is located at 2100 Webster St Ste 315, San Francisco, CA 94115. The listed phone number is (415) 923-3320.

What is Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation's specialty?

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

Is Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation enrolled in Medicare?

Yes. Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Gastroenterology, reassign their Medicare billing to Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation. 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. Of these, 1 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Daniel R Conlin M D & Robert J Elsen M D A Medical Corporation was last updated on August 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.