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Endocrinology

Jennifer D. Merrill, MD

Works at hospitals in Findlay, OH · Columbus, OH · Ohio

Summary

Dr. Jennifer D. Merrill, MD is an endocrinologist at 200 Hospital Dr, Spencer, WV 25276. Phone: (304) 927-4444. Accepts Medicare assignment. In 2024, Jennifer D. Merrill had 164 Original Medicare patients and 836 services. NPI 1871970681. 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: Endocrinologist (Medicare lists Endocrinology)
  • Address: 200 Hospital Dr, Spencer, WV 25276 · Directions (2 more locations)
  • Phone: (304) 927‑4444
  • Medicare: Accepts Medicare assignment
  • Hospitals: Blanchard Valley Hospital, Mount Carmel East & West
  • Group practice: Mount Carmel Health System (+1 more)
  • Medical school: Ohio State University College Of Medicine · graduated 2015 (11 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Jennifer D. Merrill, 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 Jennifer D. Merrill accept Medicare assignment?
Yes. Medicare's clinician data says Jennifer D. Merrill 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 Jennifer D. Merrill see?
In 2024, CMS data shows 164 Original Medicare patients and 836 services for Jennifer D. Merrill. This counts Original Medicare only and measures volume, not quality.
What is Jennifer D. Merrill's NPI number?
1871970681. 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 Jennifer D. Merrill, 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 patients164
Services billed to Medicare836
Different services or procedures16
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. 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)268 services
  2. Insertion of needle into vein for collection of blood sample (36415)178 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)127 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)94 services
  5. Hemoglobin a1c level (83036)50 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 pressure73%
  • Arthritis57%
  • Diabetes38%
  • Anxiety35%
  • Osteoporosis33%

Hospitals where Jennifer D. Merrill works

Medicare's Facility Affiliation Data lists Jennifer D. Merrill 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.

  • Blanchard Valley HospitalFindlay, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 360095
  • Mount Carmel East & WestColumbus, OH · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 360035

Practice locations

Addresses where Jennifer D. Merrill is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jennifer D. Merrill as a member of these groups (CMS data updated October 2, 2026).

  • Mount Carmel Health System84 clinicians in the group
  • Hospital Development Co.64 clinicians in the group

Specialties

Find other Endocrinology doctors in West Virginia →

Other endocrinologists in West Virginia

Clinicians with the same Medicare primary specialty in West Virginia — not a recommendation.

All endocrinologists in West Virginia →

Other clinicians in Mount Carmel Health System

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

Clinician information

CredentialMD
Medical schoolOhio State University College Of Medicine
Graduation year2015 (11 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1871970681
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