Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark Ivan Ignatius, DO

Individual provider Physical Medicine & Rehabilitation Physician · NPI 1073743233

Dr. Mark Ivan Ignatius, DO is registered under Physical Medicine and Rehabilitation in San Francisco, California. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2009, 17 years ago. Practices with California Pacific Orthopaedics and Sports Medicine a Medical Corporat, a 31-clinician group and accepts Medicare assignment. Licensed in California and Michigan.

Years since qualifying
17
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
CA, MI
In the registry since
2009
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3838 California St Rm 715
San Francisco, CA 94118-1509
Phone: (415) 668-8010
Fax: (415) 592-2560
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Medicine & Rehabilitation Physician (primary) Taxonomy 208100000X · Licence 20A11498 (CA)
Physical Medicine & Rehabilitation Physician Taxonomy 208100000X · Licence 5101018183 (MI)

Record details

NPI number1073743233
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 22, 2009
Last updated in NPPESAugust 10, 2022
Certification dateAugust 10, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICAL MEDICINE AND REHABILITATION
Also practisesINTERVENTIONAL PAIN MANAGEMENT
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2009 (17 years in practice)
Group practice California Pacific Orthopaedics And Sports Medicine A Medical Corporat — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients607
Services billed 4,703 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,572 14 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at California Pacific Orthopaedics and Sports Medicine a Medical Corporat

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 31 clinicians in the practice; 12 are shown here.

Other providers in San Francisco