Doctor profile · Federal record

Dr. Michael Zamostny, D.O.

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Chillicothe, OH

  • NPI 1659819928
  • Accepts Medicare
  • 9 yrs in practice
  • Licensed in 3 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
446 Hospital RD
Chillicothe, OH 456019030
(740) 779-7070

Credentials & registration

NPPES · NUCC
NPI registered
February 2017 — 9 yrs on file
Profile last updated
August 31, 2022
Year of graduation
2017 — 9 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (3)
Ohio #34.013630 · Florida #TPOS436 · Virginia #0102207507

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1659819928. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
436
Distinct HCPCS
6
Medicare allowed
$47,107
HCPCS Description Services Patients Avg allowed
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 137 130 $170
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes 103 100 $77
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes 79 79 $41
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 65 65 $127
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 40 40 $109
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic 12 12 $13

In context: peer comparison

Among 13 peers in this city , average services per provider: 99. This provider delivers 4.4× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Michael Zamostny's medical specialty?
Dr. Michael Zamostny practices Internal Medicine Physician in Chillicothe, OH.
Where does Dr. Michael Zamostny practice?
Dr. Michael Zamostny practices at 446 Hospital RD, Chillicothe, OH 456019030. Office phone: 7407797070.
What is Dr. Michael Zamostny's NPI?
Dr. Michael Zamostny's National Provider Identifier (NPI) is 1659819928, issued by NPPES.
Does Dr. Michael Zamostny accept Medicare assignment?
Yes. Dr. Michael Zamostny accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Zamostny commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99307). Source: CMS Medicare Physician & Other Practitioners file.