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Family Practice

Karen L. Palmer, DO

Works at hospitals in Manchester, NH · Exeter, NH · Portsmouth, NH … · New Hampshire, Maine

Summary

Dr. Karen L. Palmer, DO is a family doctor at 330 Borthwick Ave, Suite 201, Portsmouth, NH 03801. Phone: (603) 436-6638. Accepts Medicare assignment. In 2024, Karen L. Palmer had 212 Original Medicare patients and 870 services. NPI 1326029380. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 330 Borthwick Ave, Suite 201, Portsmouth, NH 03801 · Directions
  • Phone: (603) 436‑6638
  • Medicare: Accepts Medicare assignment
  • Hospitals: Elliot Hospital, Exeter Hospital Inc, Portsmouth Regional Hospital and 2 more
  • Group practice: Appledore Medical Group Inc
  • Medical school: Ohio University, College Of Osteopathic Medicine · graduated 1997 (29 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Karen L. Palmer, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Karen L. Palmer accept Medicare assignment?
Yes. Medicare's clinician data says Karen L. Palmer accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Karen L. Palmer see?
In 2024, CMS data shows 212 Original Medicare patients and 870 services for Karen L. Palmer. This counts Original Medicare only and measures volume, not quality.
What is Karen L. Palmer's NPI number?
1326029380. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Karen L. Palmer, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients212
Services billed to Medicare870
Different services or procedures25
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)274 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)185 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)150 services
  4. Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (90677)38 services
  5. Administration of pneumococcal vaccine (G0009)38 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure62%
  • Arthritis34%
  • Osteoporosis30%
  • Anxiety26%
  • Diabetes21%

Hospitals where Karen L. Palmer works

Medicare's Facility Affiliation Data lists Karen L. Palmer at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Elliot HospitalManchester, NH · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 300012
  • Exeter Hospital IncExeter, NH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 300023
  • Portsmouth Regional HospitalPortsmouth, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300029
  • Wentworth-Douglass HospitalDover, NH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 300018
  • York HospitalYork, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200020

Practice locations

Addresses where Karen L. Palmer is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Karen L. Palmer as a member of this group (CMS data updated October 2, 2026).

  • Appledore Medical Group Inc196 clinicians in the group

Specialties

Find other Family Practice doctors in New Hampshire →

Other family doctors in Portsmouth

Clinicians with the same Medicare primary specialty in Portsmouth, NH — not a recommendation.

All family doctors in Portsmouth →

Other clinicians in Appledore Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolOhio University, College Of Osteopathic Medicine
Graduation year1997 (29 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1326029380
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians