Gregory Isaacson, PA-C
Physician Assistant · Carlisle, IA
Gregory Isaacson, PA-C is a physician assistant with a practice address in Carlisle, Iowa, and NPI 1992283600, issued on Aug 3, 2018. Check the license (Iowa 092988, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Isaacson
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 092988 IA
Self-reported in NPPES; status is on the state search - Practice location
- 2755 Gateway Dr, Carlisle, IA 50047
- Phone
- (515) 358-7300
- Enumerated
- Aug 3, 2018
- Record last updated
- May 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (515) 358-7341
- Medicare enrollment
- Enrolled (PECOS I20180914001503); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,525 in Iowa → Look up another NPI →
Also registered at 2755 Gateway Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Del Rosario, MDFamily Medicine Physician1538681309
- Marissa Pyle, DOFamily Medicine Physician1770935322
Verify Gregory Isaacson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 092988Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average physician assistant in 2024
241 Medicare Part D claims for 128 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Prednisone34 claims
- Albuterol Sulfate Hfa22 claims
- Amoxicillin-Clavulanate Potass12 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
- Iowa Physicians Clinic Medical FoundationDes Moines, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Isaacson among 1,525 physician assistant records in Iowa
Gregory Isaacson, PA-C is one of 1,525 physician assistant records with a practice address in Iowa. 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 2018, is newer than 57% of them.
- NPI issued2018 · 57% of these records are older, 39% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2018 · median 2017 among the 1,053 with a school on file
- Record last updated2021 · 41% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 physician assistant records list a practice address in Carlisle
They are 4 of the 26 NPPES records with a practice address in Carlisle, and 1,525 physician assistant records in Iowa.
All 1,525 in Iowa → Every provider in Carlisle → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Brady Gerber, PA-CCarlisle, IA 500471225584329
- Lindsay Kain, PACarlisle, IA 500471699889907
- Elizabeth Kriener, PA-CCarlisle, IA 500471598857112
- Christine ButtellChariton, IA 500491508499617
- Allison Krutsinger, PACChariton, IA 500491346435146
- Christopher Osier, PA-CChariton, IA 500491275513350
- Amy Poncelow, PA-CChariton, IA 500491043688328
- Malarie BenderBoone, IA 500361225574700
Common questions
What is Gregory Isaacson, PA-C's NPI number?
Gregory Isaacson, PA-C's National Provider Identifier (NPI) is 1992283600, issued on Aug 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Isaacson, PA-C located?
The NPPES record lists a practice address at 2755 Gateway Dr, Carlisle, IA, 50047. Phone: (515) 358-7300. Providers update this record themselves, so call before visiting.
How can I verify Gregory Isaacson, PA-C's license?
NPPES lists Iowa license number 092988, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Isaacson, PA-C prescribe under Medicare Part D?
In 2024, Gregory Isaacson, PA-C had 241 Medicare Part D claims for 128 beneficiaries; 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.