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DR. RANDOLPH H. CHASE M.D.
NPI 1063428225
Internal Medicine in San Francisco, CA

Active since July 31, 2006Opted out of Medicare · through Feb 11, 2028CLIA 05D0595149 · Waiver
3838 CALIFORNIA ST, SUITE 608, SAN FRANCISCO, CA 94118(415) 668-2851(415) 387-6533 Get Directions Write a Review

NPPES record last updated: July 27, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Randolph H. Chase M.d. NPPES

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

DR. RANDOLPH H. CHASE M.D. (NPI 1063428225) is an individual internal medicine provider in San Francisco, California, licensed in California (G33463) and active in the NPI registry since July 2006. He has opted out of Medicare through February 11, 2028 and remains eligible to order and refer and holds a CLIA Waiver certificate valid through August 31, 2026.

NPPES Registry Identity

NPI1063428225
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. RANDOLPH H. CHASECredential: M.D.
Location Address3838 CALIFORNIA ST, SUITE 608San Francisco, CA 94118-1522
Mailing Address3838 California St, Suite 608San Francisco, CA 94118-1522 · (415) 668-2851 · Fax (415) 387-6533
Phone(415) 668-2851
Fax(415) 387-6533
Sole ProprietorYes
Enumeration DateJuly 31, 2006
Last NPPES UpdateJuly 27, 2007
✔ NPI 1063428225 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G33463
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.
3838 CALIFORNIA ST, San Francisco, CA 94118
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINA45562CA
Medicare ID-Type Unspecified00G334630CA · Provider Number
OtherG33463CA · California License Number

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Randolph H. Chase M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 11, 2020 through February 11, 2028.

Opt-Out Effective DateFebruary 11, 2020
Opt-Out In Effect ThroughFebruary 11, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

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 05D0595149

Randolph H Chase MD · San Francisco, CA
Active · expires Aug 31, 2026
CLIA Number05D0595149
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorRandolph H. Chase
Laboratory Phone(415) 668-2851
Laboratory LocationRandolph H Chase MD3838 California, San Francisco, CA 94118
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

SAN FRANCISCO UROGYNECOLOGY, INC.
Obstetrics & Gynecology (Gynecology)
3838 CALIFORNIA ST, SUITE 316
SAN FRANCISCO, CA 94118
San Francisco County (415) 367-9500
COHEN & HUFFORD MDS A MEDICAL CORPORATION
Internal Medicine (Hematology & Oncology)
3838 CALIFORNIA ST, SUITE 707
SAN FRANCISCO, CA 94118
San Francisco County (415) 668-0160
LAURENCE F YEE M.D.
Colon & Rectal Surgery
3838 CALIFORNIA ST, RM 616
SAN FRANCISCO, CA 94118
San Francisco County (415) 668-0411
DANIEL F HARTMAN MD FACS A PROFESSIONAL CORPORATION
Otolaryngology
3838 CALIFORNIA ST, SUITE 505
SAN FRANCISCO, CA 94118
San Francisco County (415) 751-4914
CHRISTOPHER COX M.D.
Orthopaedic Surgery
3838 CALIFORNIA ST, SUITE 715
SAN FRANCISCO, CA 94118
San Francisco County (415) 592-2014
TAYLOR SMITH M.D.
Orthopaedic Surgery
3838 CALIFORNIA ST, SUITE 715
SAN FRANCISCO, CA 94118
San Francisco County (415) 592-2014
KEVIN KNOPF MD PC
Specialist
3838 CALIFORNIA ST, SUITE 707
SAN FRANCISCO, CA 94118
San Francisco County (415) 668-0160
DR. FREDERIC P. WHINERY M.D.
Internal Medicine
3838 CALIFORNIA ST, RM 600
SAN FRANCISCO, CA 94118
San Francisco County (415) 923-3540

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 Randolph Chase's NPI number?

The NPI number for Randolph Chase is 1063428225. It was assigned to this individual provider in the NPPES registry on July 31, 2006.

Where is Randolph Chase located?

Randolph Chase practices at 3838 California St Suite 608, San Francisco, CA 94118. The listed phone number is (415) 668-2851.

What is Randolph Chase's specialty?

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

Is Randolph Chase enrolled in Medicare?

No. Randolph Chase has opted out of Medicare through February 11, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Does Randolph Chase hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0595149) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Randolph Chase was last updated on July 27, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.