DR. JOHN M HAMILL MD
NPI 1861483703
Psychiatry & Neurology - Psychiatry in Athens, OH
About Dr. John M Hamill Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN M HAMILL MD (NPI 1861483703) is an individual psychiatry provider in Athens, Ohio, licensed in Ohio (35056975) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John M Hamill Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show John Hamill reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Athens, OH 45701
- Reassigned Medicare billing, Ohio enrollment
- 263 clinicians in this Medicare group
Logan, OH 43138
- Reassigned Medicare billing, Ohio enrollment
- 41 clinicians in this Medicare group
Lancaster, OH 43130
- Reassigned Medicare billing, Ohio enrollment
- 7 clinicians in this Medicare group
Columbus, OH 43213
- Reassigned Medicare billing, Ohio enrollment
- 3,314 clinicians in this Medicare group
Hilliard, OH 43026
- Reassigned Medicare billing, Ohio enrollment
- 15 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ATHENS, OH 45701
ATHENS, OH 45701
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Hamill's NPI number?
The NPI number for John Hamill is 1861483703. It was assigned to this individual provider in the NPPES registry on October 31, 2005.
Where is John Hamill located?
John Hamill practices at 100 Hospital Dr, Athens, OH 45701. The listed phone number is (740) 594-5000.
What is John Hamill's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is John Hamill enrolled in Medicare?
Yes. John Hamill is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Hamill's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Hamill reassigns Medicare benefits to 5 organizations: State Of Ohio Office Of Budget And Management State Accounting (Athens, OH), Hocking Valley Medical Group, Inc. (Logan, OH), Ohio Psychiatric Services LLC. (Lancaster, OH), Ohiohealth Corporation (Columbus, OH) and Psychiatric Services And Tms Center LLC (Hilliard, OH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Hamill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Hamill accept?
Health plans from Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., CareSource, MedMutual and Molina Healthcare and 3 other insurers list John Hamill as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Hamill was last updated on December 28, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John M Hamill, MD · NPI 1861483703
Psychiatry physician in Athens, Ohio. Individual provider, active in the CMS NPPES registry since October 31, 2005.
## Identity
- **NPI:** 1861483703 (Entity type: Individual)
- **Enumerated:** October 31, 2005
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 35056975 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 HOSPITAL DR, Athens, OH 45701-2301
- **Phone:** (740) 594-5000 · **Fax:** (740) 592-5402
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): State Of Ohio Office Of Budget And Management State Accounting (NPI 1063486058, Athens, OH); Hocking Valley Medical Group, Inc. (NPI 1801994827, Logan, OH); Ohio Psychiatric Services LLC. (NPI 1902359383, Lancaster, OH); Ohiohealth Corporation (NPI 1265627301, Columbus, OH); Psychiatric Services And Tms Center LLC (NPI 1891431821, Hilliard, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Kansas School Of Med, class of 1987
## Record status
- **NPPES last updated:** December 28, 2011
- **Other identifiers:** Medicaid 2032268 (OH); Medicare PIN HA0820397 (OH); Medicare UPIN E78238 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1861483703) · Data from the CMS NPPES public registry.