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MERCY DOCTORS MEDICAL GROUP INC
NPI 1801809447
Internal Medicine in San Francisco, CA

Active since August 14, 2006CLIA 05D0887344 · Waiver
1 SHRADER ST, SUITE 640, SAN FRANCISCO, CA 94117(415) 752-0100(415) 752-7103 Get Directions Write a Review

NPPES record last updated: August 19, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mercy Doctors Medical Group Inc NPPES

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

MERCY DOCTORS MEDICAL GROUP INC (NPI 1801809447) is a healthcare organization registered as an internal medicine in San Francisco, California and active in the NPI registry since August 2006. The organization holds a CLIA Waiver certificate valid through June 8, 2028 and lists Carl E Bricca, President, as its authorized official.

NPPES Registry Identity

NPI1801809447
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMERCY DOCTORS MEDICAL GROUP INC
Location Address1 SHRADER ST, SUITE 640San Francisco, CA 94117-1016
Mailing Address1 Shrader St, Suite 640San Francisco, CA 94117-1016 · (415) 752-0100 · Fax (415) 752-7103
Phone(415) 752-0100
Fax(415) 752-7103
Organization SubpartNo
Authorized OfficialCarl E BriccaPresident · (415) 752-0100
Enumeration DateAugust 14, 2006
Last NPPES UpdateAugust 19, 2014
✔ NPI 1801809447 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in CA · C33715✔ Licensed in CA · 20A6178✔ Licensed in CA · C24372✔ Licensed in CA · G79073✔ Licensed in CA · G77043✔ Licensed in CA · G27664✔ Licensed in CA · A49422✔ Licensed in CA · G61346✔ Licensed in CA · 20A5403
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.
Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X · License 20A5403 (CA)
Also ListedInternal Medicine · RheumatologyTaxonomy 207RR0500X · License C24372 (CA), A49422 (CA)
1 SHRADER ST, San Francisco, CA 94117
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Other Identifiers 17

Medicare UPING16339CA
Medicaid00C337150CA
Medicaid00G790730CA
Medicaid020A54030CA
Medicare UPINA32614CA
Medicare UPINE24796CA
Medicare UPINF34555CA
Medicare ID-Type Unspecified00C243720CA
Medicaid00A494220CA
Medicaid00G770430CA
Medicare UPINA35355CA
Medicare UPINE24902CA
Medicare UPING08028CA
Medicare UPINA89457CA
Medicaid00G276640CA
Medicare UPING16981CA
Medicaid00G613460CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Mercy Doctors Medical Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

14

Medicare enrollment records show 14 clinicians reassign Medicare billing to Mercy Doctors Medical Group Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 12 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 2

Internal Medicine10
Nurse Practitioner4

Clinicians, nearest first (14)

Charles Allison, M.D.
Internal Medicine
NPI 1376541060
1 SHRADER ST SUITE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS✔ Accepts MedicareSame address
Diana Hilbert, M.D.
Internal Medicine
NPI 1386642551
1 SHRADER ST SUITE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS✔ Accepts MedicareSame address
Carl Bricca, D.O.
Internal Medicine
NPI 1114925385
1 SHRADER ST SUITE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS✔ Accepts Medicare0.3 mi
Kenneth Mills, M.D.
Internal Medicine
NPI 1023016292
1 SHRADER ST SUITE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS✔ Accepts Medicare0.3 mi
James Yoss, M.D.
Internal Medicine
NPI 1932107109
1 SHRADER ST SUITE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS0.3 mi
Michelle Burk, D.O.
Internal Medicine
NPI 1962935775
450 STANYAN ST
San Francisco, CA 94117
(415) 668-1000
✔ PECOS✔ Accepts Medicare0.4 mi
Xylona Bibal, MD
Internal Medicine
NPI 1699112169
1 SHRADER ST STE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS✔ Accepts Medicare0.4 mi
Lauren Olson, MD
Internal Medicine
NPI 1639533961
1 SHRADER ST STE 640
San Francisco, CA 94117
(415) 752-0100
✔ PECOS✔ Accepts Medicare0.4 mi
Eun Sun Park, NP
Nurse Practitioner
NPI 1134962574
2 KORET WAY
San Francisco, CA 94143
(415) 476-1435
✔ PECOS0.5 mi
William Moore, NP
Nurse Practitioner
NPI 1124674981
1545 DIVISADERO ST FL 2
San Francisco, CA 94143
(415) 353-7900
✔ PECOS✔ Accepts Medicare1.2 mi
Lauren Vree, NP
Nurse Practitioner
NPI 1760701247
52 DORE ST
San Francisco, CA 94103
(415) 861-0828
✔ PECOS2.2 mi
Francis Charlton, M.D.
Internal Medicine
NPI 1548339104
2645 OCEAN AVE STE 208
San Francisco, CA 94132
(415) 585-7880
✔ PECOS✔ Accepts Medicare2.8 mi
Jeaniesar Caluag, M.D.
Internal Medicine
NPI 1720246705
31 JULIANNA AVE
Moss Beach, CA 94038
(415) 615-2534
✔ PECOS✔ Accepts Medicare17 mi
Thomas Sisk, FNP-BC
Nurse Practitioner
NPI 1538783139
102 S 11TH ST
San Jose, CA 95112
(408) 471-8368
✔ PECOS✔ Accepts Medicare43 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0887344

Mercy Doctors Medical Group · San Francisco, CA
Active · expires Jun 8, 2028
CLIA Number05D0887344
Laboratory TypePhysician Office
Certificate Effective DateJune 9, 2026
Certificate Expiration DateJune 8, 2028
Laboratory DirectorAlbert Frietzsche
Laboratory Phone(415) 752-0100
Laboratory LocationMercy Doctors Medical Group1 Shrader Street, Suite 640, San Francisco, CA 94117
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Mercy Doctors Medical Group Inc's NPI number?

The NPI number for Mercy Doctors Medical Group Inc is 1801809447. It was assigned to this organization in the NPPES registry on August 14, 2006.

Where is Mercy Doctors Medical Group Inc located?

Mercy Doctors Medical Group Inc is located at 1 Shrader St Suite 640, San Francisco, CA 94117. The listed phone number is (415) 752-0100.

What is Mercy Doctors Medical Group Inc's specialty?

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

Is Mercy Doctors Medical Group Inc enrolled in Medicare?

Yes. Mercy Doctors Medical Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mercy Doctors Medical Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians in 2 Medicare specialties reassign their Medicare billing to Mercy Doctors Medical Group 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 Internal Medicine (10) and Nurse Practitioner (4). Of these, 2 practice at this address and 12 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Mercy Doctors Medical Group Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0887344) is associated with this NPI, valid through June 8, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Mercy Doctors Medical Group Inc was last updated on August 19, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.