Mark Ivan Ignatius, D.O.
Physical Medicine & Rehabilitation Physician · San Francisco, CA
Mark Ivan Ignatius, D.O. is a physical medicine & rehabilitation physician with a practice address in San Francisco, California, and NPI 1073743233, issued on Jul 22, 2009. Check the license (California 20A11498, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Ivan Ignatius
- Credential
- D.O.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License numbers
- 20A11498 CA
5101018183 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3838 California St RM 715, San Francisco, CA 94118
- Phone
- (415) 668-8010
- Enumerated
- Jul 22, 2009
- Record last updated
- Aug 10, 2022
- Fax
- (415) 592-2560
- Medicare enrollment
- Enrolled (PECOS I20130727000043); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2009
- Entity
- Type 1 · individual
Also registered at 3838 California St RM 715
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Aicardi, PA-CSurgical Physician Assistant1528557568
- Benedetta Ames, PAPhysician Assistant1942913058
- Seyed Arshad, DOOrthopaedic Surgery Physician1669030458
- Keith Chan, M.D.Sports Medicine (Orthopaedic Surgery) Physician1548452782
- Kanwaljit Gill, MDOrthopaedic Surgery Physician1679658348
- Virginia Hoptman, PA-CSurgical Physician Assistant1811531023
Verify Mark Ivan Ignatius in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11498Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
304 Medicare Part D claims for 118 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 19 claims were for opioids.
Most prescribed
- Gabapentin166 claims
- Celecoxib64 claims
- Tizanidine Hcl30 claims
- Diclofenac Sodium15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,915.58
18 payments; by number, the most common kind was food and beverage; the largest payer was Biotronik Nro, Inc. The 3,895 providers of this specialty with any payment received $1,237.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- California Pacific Orthopaedics And Sports Medicine A Medical CorporatSan Francisco, CA
- Regents OF The University OF California - UcsfSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in California
There are 1,549 physical medicine & rehabilitation physician records in California.
Other physical medicine & rehabilitation physician records in California
- Payandeh Abadee, M.D.San Pedro, CA1376557793
- Sherif Abdalla, MDFresno, CA1750563128
- Alexan Abdel-Malek, MDSylmar, CA1457410060
- Alicia Abels, M.D.Folsom, CA1336234442
- Gary Abrams, M.D.San Francisco, CA1346213246
- Michael Acord, MDCosta Mesa, CA1205903101
- Hugh Adams, M.D.Long Beach, CA1962436774
- Lefkos Aftonomos, M.D.San Mateo, CA1972544088
- Haleh Agdassi, M.D.Palo Alto, CA1477664159
- Reena Agrawal, MDPalo Alto, CA1720257520
Common questions
What is Mark Ivan Ignatius, D.O.'s NPI number?
Mark Ivan Ignatius, D.O.'s National Provider Identifier (NPI) is 1073743233, issued on Jul 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Ivan Ignatius, D.O. located?
The NPPES record lists a practice address at 3838 California St RM 715, San Francisco, CA, 94118. Phone: (415) 668-8010. Providers update this record themselves, so call before visiting.
How can I verify Mark Ivan Ignatius, D.O.'s license?
NPPES lists California license number 20A11498, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Ivan Ignatius, D.O. prescribe under Medicare Part D?
In 2024, Mark Ivan Ignatius, D.O. had 304 Medicare Part D claims for 118 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.
What is Mark Ivan Ignatius, D.O.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.