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Family Practice

Erica L. Hannema, DO

Works at hospitals in Flemington, NJ · Phillipsburg, NJ · New Jersey

Summary

Dr. Erica L. Hannema, DO is a family doctor at 1100 Wescott Dr, Flemington, NJ 08822. Phone: (908) 788-6535. Accepts Medicare assignment. In 2024, Erica L. Hannema had 181 Original Medicare patients and 649 services. NPI 1780012609. 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: 1100 Wescott Dr, Flemington, NJ 08822 · Directions (2 more locations)
  • Phone: (908) 788‑6535
  • Medicare: Accepts Medicare assignment
  • Hospitals: Hunterdon Medical Center, St Luke's Warren Hospital
  • Group practice: Hunterdon Primary Care PC
  • Medical school: University Of New England, College Of Osteo Medicine · graduated 2011 (15 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 Erica L. Hannema, 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 Erica L. Hannema accept Medicare assignment?
Yes. Medicare's clinician data says Erica L. Hannema 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 Erica L. Hannema see?
In 2024, CMS data shows 181 Original Medicare patients and 649 services for Erica L. Hannema. This counts Original Medicare only and measures volume, not quality.
What is Erica L. Hannema's NPI number?
1780012609. 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 Erica L. Hannema, 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 patients181
Services billed to Medicare649
Different services or procedures35
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Insertion of needle into vein for collection of blood sample (36415)170 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)117 services
  3. 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)78 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)71 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)27 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%
  • Arthritis31%
  • Depression27%
  • Diabetes24%
  • Ischemic heart disease24%

Hospitals where Erica L. Hannema works

Medicare's Facility Affiliation Data lists Erica L. Hannema 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.

  • Hunterdon Medical CenterFlemington, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 310005
  • St Luke's Warren HospitalPhillipsburg, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310060

Practice locations

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

Group practices

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

  • Hunterdon Primary Care PC63 clinicians in the group

Specialties

Find other Family Practice doctors in New Jersey →

Other family doctors in Flemington

Clinicians with the same Medicare primary specialty in Flemington, NJ — not a recommendation.

All family doctors in Flemington →

Other clinicians in Hunterdon Primary Care PC

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 year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1780012609
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