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Anesthesiology

Nathanael Slater, DO

Works at hospitals in Concord, NH · Laconia, NH · New Hampshire

Summary

Dr. Nathanael Slater, DO is an anesthesiologist at 250 Pleasant St, Concord, NH 03301. Phone: (603) 230-3138. Accepts Medicare assignment. In 2024, Nathanael Slater had 232 Original Medicare patients and 249 services. NPI 1043365877. 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: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 250 Pleasant St, Concord, NH 03301 · Directions
  • Phone: (603) 230‑3138
  • Medicare: Accepts Medicare assignment
  • Hospitals: Concord Hospital, Concord Hospital- Laconia
  • Group practice: Concord Hospital Inc
  • Medical school: University Of New England, College Of Osteo Medicine · graduated 2005 (21 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Nathanael Slater, 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 Nathanael Slater accept Medicare assignment?
Yes. Medicare's clinician data says Nathanael Slater 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 Nathanael Slater see?
In 2024, CMS data shows 232 Original Medicare patients and 249 services for Nathanael Slater. This counts Original Medicare only and measures volume, not quality.
What is Nathanael Slater's NPI number?
1043365877. 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 Nathanael Slater, 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 patients232
Services billed to Medicare249
Different services or procedures61
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Anesthesia for procedure for total knee joint replacement (01402)25 services
  2. Anesthesia for total hip replacement (01214)24 services
  3. Anesthesia for electroshock therapy (00104)19 services
  4. Anesthesia for other procedure on urinary system through urethra (00910)12 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 pressure70%
  • Arthritis60%
  • Anxiety32%
  • Depression30%
  • Atrial fibrillation28%

Hospitals where Nathanael Slater works

Medicare's Facility Affiliation Data lists Nathanael Slater 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.

  • Concord HospitalConcord, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 300001
  • Concord Hospital- LaconiaLaconia, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300005

Practice locations

Addresses where Nathanael Slater is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nathanael Slater as a member of this group (CMS data updated October 2, 2026).

  • Concord Hospital Inc567 clinicians in the group

Specialties

Find other Anesthesiology doctors in New Hampshire →

Other anesthesiologists in Concord

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

All anesthesiologists in Concord →

Other clinicians in Concord Hospital Inc

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

Clinician information

CredentialDO
Medical schoolUniversity Of New England, College Of Osteo Medicine
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1043365877
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