Adam Patrick Callahan, PA-C
Physician Assistant · Charleston, SC
Adam Patrick Callahan, PA-C is a physician assistant with a practice address in Charleston, South Carolina, and NPI 1700038346, issued on Oct 15, 2008. Check the license (South Carolina 2069, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Adam Patrick Callahan
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 2069 SC
99034373A IN
Self-reported in NPPES; status is on the state search - Practice location
- 316 Calhoun St, Charleston, SC 29401
- Phone
- (843) 724-2450
- Enumerated
- Oct 15, 2008
- Record last updated
- May 28, 2025
- Fax
- (843) 724-2455
- Medicare enrollment
- Enrolled (PECOS I20150323000683); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,294 in South Carolina → Look up another NPI →
Also registered at 316 Calhoun St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Adam Patrick Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
Search for license 2069Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average physician assistant in 2024
50 Medicare Part D claims for 24 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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 2 group practices
- Charleston-Amg Specialty Hospital IncMt Pleasant, SC
- Southeastern Hospitalist Services PCSummerville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adam Patrick Callahan among 2,294 physician assistant records in South Carolina
Adam Patrick Callahan, PA-C is one of 2,294 physician assistant records with a practice address in South Carolina. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 18% of them.
- NPI issued2008 · 18% of these records are older, 79% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2019 among the 1,516 with a school on file
- Record last updated2025 · 31% 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 South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
407 physician assistant records list a practice address in Charleston
They are 407 of the 10,840 NPPES records with a practice address in Charleston, and 2,294 physician assistant records in South Carolina.
All 2,294 in South Carolina → Every provider in Charleston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Ellen Baldino, P.A.Charleston, SC 294011215173372
- Margaret Courtney, PACharleston, SC 294011851411037
- Karen Drawdy, PA-CCharleston, SC 294011346489580
- William Etheridge, PA-CCharleston, SC 294011467750315
- Deanne Fowler, PA-CCharleston, SC 294011801149752
- Whitney Jeffrey, PA-CCharleston, SC 294011073804183
- Stephen Keen, PA-CCharleston, SC 294011669797049
- Debra Kincaid, P.A.Charleston, SC 294011437112257
Common questions
What is Adam Patrick Callahan, PA-C's NPI number?
Adam Patrick Callahan, PA-C's National Provider Identifier (NPI) is 1700038346, issued on Oct 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Adam Patrick Callahan, PA-C located?
The NPPES record lists a practice address at 316 Calhoun St, Charleston, SC, 29401. Phone: (843) 724-2450. Providers update this record themselves, so call before visiting.
How can I verify Adam Patrick Callahan, PA-C's license?
NPPES lists South Carolina license number 2069, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Adam Patrick Callahan, PA-C prescribe under Medicare Part D?
In 2024, Adam Patrick Callahan, PA-C had 50 Medicare Part D claims for 24 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.