Mark D. Filidei, D.O.
Internal Medicine Physician · Newport Beach, CA
Mark D. Filidei, D.O. is an internal medicine physician with a practice address in Newport Beach, California, and NPI 1518039197, issued on Nov 15, 2006. Check the license (California 20A7536, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark D. Filidei
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A7536 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4321 Birch St, Newport Beach, CA 92660
- Phone
- (949) 851-1550
- Enumerated
- Nov 15, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 270-0169
- Entity
- Type 1 · individual
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Verify Mark D. Filidei in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7536Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
126 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Progesterone38 claims
- Estradiol (Twice Weekly)30 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.
Mark D. Filidei among 17,696 internal medicine physician records in California
Mark D. Filidei, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
94 internal medicine physician records list a practice address in Newport Beach
They are 94 of the 4,414 NPPES records with a practice address in Newport Beach, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Newport Beach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Russell Alterman, D.O.Newport Beach, CA 926601487609939
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- Susan Cederstrom, M.D.Newport Beach, CA 926601578529012
- Zoltan Csuka, MDNewport Beach, CA 926601679539951
- William Fukuda, M.D.Newport Beach, CA 926601396701850
- Gilbert Goodman, M.D.Newport Beach, CA 926601851357867
- Richard Harano, M.DNewport Beach, CA 926601235185695
- Bradley Kays, M.D.Newport Beach, CA 926601417914334
Common questions
What is Mark D. Filidei, D.O.'s NPI number?
Mark D. Filidei, D.O.'s National Provider Identifier (NPI) is 1518039197, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Filidei, D.O. located?
The NPPES record lists a practice address at 4321 Birch St, Newport Beach, CA, 92660. Phone: (949) 851-1550. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Filidei, D.O.'s license?
NPPES lists California license number 20A7536, 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 D. Filidei, D.O. prescribe under Medicare Part D?
In 2024, Mark D. Filidei, D.O. had 126 Medicare Part D claims for 22 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.