William Maxfield Schlegel, PA-C
Physician Assistant · San Bernardino, CA
William Maxfield Schlegel, PA-C is a physician assistant with a practice address in San Bernardino, California, and NPI 1437472867, issued on Mar 12, 2010. Check the license (California PA20886, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Maxfield Schlegel
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA20886 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 E Highland Ave Ste 251, San Bernardino, CA 92404
- Phone
- (909) 882-4605
- Enumerated
- Mar 12, 2010
- Record last updated
- Sep 21, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (909) 475-2680
- Medicare enrollment
- Enrolled (PECOS I20100927000567); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 401 E Highland Ave Ste 251
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mir Ali, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1831301647
- Ann Connor, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1710098272
- Sameh Hanna, M.D.Pulmonary Disease Physician1326112913
- Nahidh Hasaniya, M.D.PHDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1316973605
- Michio Kajitani, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1194704387
- Gregory Mitchell, PA-CPhysician Assistant1477636496
Verify William Maxfield Schlegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA20886Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average physician assistant in 2024
309 Medicare Part D claims for 73 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 46 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen38 claims
- Atorvastatin Calcium35 claims
- Furosemide35 claims
- Amiodarone Hcl27 claims
- Potassium Chloride27 claims
- Metoprolol Tartrate22 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 MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $239.05
4 payments; by number, the most common kind was food and beverage; the largest payer was Getinge USA Sales, LLC. The 64,719 providers of this specialty with any payment received $841.65 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 one group practice
- Dignity Health Medical FoundationSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Maxfield Schlegel among 14,451 physician assistant records in California
William Maxfield Schlegel, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 27% of them.
- NPI issued2010 · 27% of these records are older, 70% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2009 · median 2018 among the 7,214 with a school on file
- Record last updated2017 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
83 physician assistant records list a practice address in San Bernardino
They are 83 of the 5,645 NPPES records with a practice address in San Bernardino, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Bernardino → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Silvia Barr, PA-CSan Bernardino, CA 924041245602259
- Brian Benson, PA-CSan Bernardino, CA 924041700943107
- William Boyle, PA-CSan Bernardino, CA 924041124053715
- Raymond Cervenka, PASan Bernardino, CA 924041497965529
- Deval Dave, PASan Bernardino, CA 924041013220458
- William Inciso, PA-C, PHDSan Bernardino, CA 924041407050289
- Amber Janson, PA-CSan Bernardino, CA 924041750753141
- Billy Kim, PA-CSan Bernardino, CA 924041285973859
Common questions
What is William Maxfield Schlegel, PA-C's NPI number?
William Maxfield Schlegel, PA-C's National Provider Identifier (NPI) is 1437472867, issued on Mar 12, 2010. An NPI identifies a provider in billing; it is not a license.
Where is William Maxfield Schlegel, PA-C located?
The NPPES record lists a practice address at 401 E Highland Ave Ste 251, San Bernardino, CA, 92404. Phone: (909) 882-4605. Providers update this record themselves, so call before visiting.
How can I verify William Maxfield Schlegel, PA-C's license?
NPPES lists California license number PA20886, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Maxfield Schlegel, PA-C prescribe under Medicare Part D?
In 2024, William Maxfield Schlegel, PA-C had 309 Medicare Part D claims for 73 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is William Maxfield Schlegel, PA-C's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.