Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Michael Panopoulos, DO

Individual provider Specialist · NPI 1356342653

John Michael Panopoulos, DO practises Anesthesiology in Portsmouth, New Hampshire. Qualified in 1988, 38 years ago. Practices with Granite State Anesthesia Partners, LLC, a 42-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
38
Licensed in
NH
In the registry since
2005
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

333 Borthwick Avenue Portsmouth Anesthesia Associates
Portsmouth, NH 03801-7128 Not confirmed with CMS for 18 years — call before visiting
Phone: (603) 749-0043
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence NH10491 (NH)
Specialist Taxonomy 174400000X · Licence NH10491 (NH)

Record details

NPI number1356342653
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 9, 2005
Last updated in NPPESAugust 1, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Granite State Anesthesia Partners, Llc — 42 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients40
Services billed 91 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Granite State Anesthesia Partners, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 42 clinicians in the practice; 12 are shown here.

Other providers in Portsmouth