Ralph Pierce Zehler, PA-C
Physician Assistant · McHenry, IL
Ralph Pierce Zehler, PA-C is a physician assistant with a practice address in McHenry, Illinois, and NPI 1972562643, issued on Mar 21, 2006. Check the license (Illinois 085006771, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ralph Pierce Zehler
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 085006771 IL
PA10001576 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4309 W Medical Center Dr Ste A200, McHenry, IL 60050
- Phone
- (815) 759-8070
- Enumerated
- Mar 21, 2006
- Record last updated
- Jan 30, 2023
- Fax
- (815) 759-4931
- Medicaid ID
- 8422180 WA
- Medicare enrollment
- Enrolled (PECOS I20060321000790); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 4309 W Medical Center Dr Ste A200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ralph Pierce Zehler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085006771Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average physician assistant in 2024
12 Medicare Part D claims, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Bills Medicare through one group practice
- Post Acute Medical PLLCTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ralph Pierce Zehler among 4,926 physician assistant records in Illinois
Ralph Pierce Zehler, PA-C is one of 4,926 physician assistant records with a practice address in Illinois. 82% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1978 · median 2019 among the 3,407 with a school on file
- Record last updated2023 · 35% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 physician assistant records list a practice address in McHenry
They are 27 of the 1,852 NPPES records with a practice address in McHenry, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in McHenry → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kimberly Ackert, PA-CMcHenry, IL 600501538172739
- Deborah Bailey, PA-CMcHenry, IL 600501942632567
- Gregg Cognac, P.A.-CMcHenry, IL 600501467409508
- Scott Colburn, PAMcHenry, IL 600501871606079
- Benjamin Foerster, PA-CMcHenry, IL 600501922444835
- Jonathan Haririe, P.A.-CMcHenry, IL 600501386741163
- Amy Heinz, PA-CMcHenry, IL 600501942300033
- Stacie Johnson, PACMcHenry, IL 600501770696890
Common questions
What is Ralph Pierce Zehler, PA-C's NPI number?
Ralph Pierce Zehler, PA-C's National Provider Identifier (NPI) is 1972562643, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ralph Pierce Zehler, PA-C located?
The NPPES record lists a practice address at 4309 W Medical Center Dr Ste A200, McHenry, IL, 60050. Phone: (815) 759-8070. Providers update this record themselves, so call before visiting.
How can I verify Ralph Pierce Zehler, PA-C's license?
NPPES lists Illinois license number 085006771, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Ralph Pierce Zehler, PA-C prescribe under Medicare Part D?
In 2024, Ralph Pierce Zehler, PA-C had 12 Medicare Part D claims; the average among physician assistant prescribers was 830. 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.