Mark Douglas Fritzler, MD
Urology Physician · Chico, CA
Mark Douglas Fritzler, MD is a urology physician with a practice address in Chico, California, and NPI 1508862871, issued on Jun 22, 2005. Check the license (California G60227, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Douglas Fritzler
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- G60227 CA
Self-reported in NPPES; status is on the state search - Practice location
- 645 W East Ave, Chico, CA 95926
- Phone
- (530) 898-8405
- Enumerated
- Jun 22, 2005
- Record last updated
- Mar 26, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (530) 899-0944
- Medicaid ID
- 00G602270 CA
- Medicare enrollment
- Enrolled (PECOS I20100312000682); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 1987
- Entity
- Type 1 · individual
Verify Mark Douglas Fritzler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G60227Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average urology physician in 2024
421 Medicare Part D claims for 171 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Tamsulosin Hcl179 claims
- Finasteride104 claims
- Dutasteride24 claims
- Alfuzosin Hcl Er14 claims
- Gemtesa13 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): 76.7 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).
Bills Medicare through one group practice
- Enloe Medical CenterChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Urology Physician providers in California
There are 1,524 urology physician records in California.
Other urology physician records in California
- David Aaronson, MDOakland, CA1215053129
- Jason Abber, MDPanorama City, CA1356366926
- Marc Abboud, MDLos Alamitos, CA1265096531
- George AbdelsayedAnaheim, CA1568721843
- Garen AbediDowney, CA1285909051
- Jennifer Abidari, MDStanford, CA1811098197
- Sherif Aboseif, MDOxnard, CA1093882995
- Parwiz Abrahimi, M.D., PH.D.Los Angeles, CA1154857613
- Anthony Acquaviva, MDVallejo, CA1457439283
- Theodore Affue, M.D.El Centro, CA1386674000
Common questions
What is Mark Douglas Fritzler, MD's NPI number?
Mark Douglas Fritzler, MD's National Provider Identifier (NPI) is 1508862871, issued on Jun 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Douglas Fritzler, MD located?
The NPPES record lists a practice address at 645 W East Ave, Chico, CA, 95926. Phone: (530) 898-8405. Providers update this record themselves, so call before visiting.
How can I verify Mark Douglas Fritzler, MD's license?
NPPES lists California license number G60227, 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 Douglas Fritzler, MD prescribe under Medicare Part D?
In 2024, Mark Douglas Fritzler, MD had 421 Medicare Part D claims for 171 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is Mark Douglas Fritzler, MD's MIPS final score?
The 2023 MIPS final score is 76.7 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.