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DR. DANIEL JAMES CHROBAK
NPI 1053638106
Internal Medicine in San Francisco, CA

Active since April 29, 2010Opted out of Medicare · through Jan 1, 2028
4900 CALIFORNIA ST, SAN FRANCISCO, CA 94118(415) 750-9894 Get Directions Write a Review

NPPES record last updated: May 25, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Daniel James Chrobak NPPES

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

DR. DANIEL JAMES CHROBAK (NPI 1053638106) is an individual internal medicine provider in San Francisco, California, licensed in California (A119356) and active in the NPI registry since April 2010. He has opted out of Medicare through January 1, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1053638106
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DANIEL JAMES CHROBAK
Location Address4900 CALIFORNIA STSan Francisco, CA 94118-1115
Mailing Address4900 California StSan Francisco, CA 94118-1115 · (415) 750-9894
Phone(415) 750-9894
Sole ProprietorYes
Enumeration DateApril 29, 2010
Last NPPES UpdateMay 25, 2014
✔ NPI 1053638106 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 · A119356
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.
4900 CALIFORNIA ST, San Francisco, CA 94118
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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. Daniel James Chrobak 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 January 1, 2024 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2024
Opt-Out In Effect ThroughJanuary 1, 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.

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 3

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

DR. LILY HUANG M.D.
Internal Medicine
4900 CALIFORNIA ST
SAN FRANCISCO, CA 94118
San Francisco County (415) 750-9087
DR. PATRICIA H GIBBS M.D.
Family Medicine
4900 CALIFORNIA ST
SAN FRANCISCO, CA 94118
San Francisco County (415) 750-9894
DR. RICHARD D GIBBS MD
Family Medicine (Adult Medicine)
4900 CALIFORNIA ST
SAN FRANCISCO, CA 94118
San Francisco County (415) 750-9894

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 Chrobak's NPI number?

The NPI number for Daniel Chrobak is 1053638106. It was assigned to this individual provider in the NPPES registry on April 29, 2010.

Where is Daniel Chrobak located?

Daniel Chrobak practices at 4900 California St, San Francisco, CA 94118. The listed phone number is (415) 750-9894.

What is Daniel Chrobak's specialty?

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

Is Daniel Chrobak enrolled in Medicare?

No. Daniel Chrobak has opted out of Medicare through January 1, 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.

When was this NPI record last updated?

The NPPES record for Daniel Chrobak was last updated on May 25, 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.