What is Grace Ernstberger's NPI number?

Grace Ernstberger's National Provider Identifier (NPI) is 1427637800, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Grace Ernstberger's specialty?

Grace Ernstberger is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Grace Ernstberger located?

Grace Ernstberger's practice location on file with NPPES is 2301 Erwin Rd, Durham, NC 27705-4699.

What is Grace Ernstberger's phone number?

The practice phone number listed in the NPPES registry for Grace Ernstberger is (919) 684-8111.

Does Grace Ernstberger accept Medicare?

Grace Ernstberger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Grace Ernstberger's NPI active?

Yes — Grace Ernstberger's NPI (1427637800) is active in the NPPES registry as of the last update on 2024-08-31.

IndividualActiveAccepts Medicare

Grace Ernstberger, MD

NPI 1427637800 · Internal Medicine Physician · Durham, NC

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Grace Ernstberger, MD is a Internal Medicine Physician provider in Durham, NC (NPI 1427637800).

Provider details

NPI number: 1427637800
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 2024-01193 (NC)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Basic profile(42/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
5 yrs in NPPES registry
Profile completeness28% of score
83% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
101 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	38	$74
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	33	$111
Hospital Discharge Day Management, More Than 30 Minutes99239	16	$107
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	14	$162

Typical Medicare-allowed amounts for these services range $74–$162 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.

Drug	Part D claims (2024)
Atorvastatin Calcium	21
Furosemide	20
Fluticasone Propionate	16
Diclofenac Sodium	14
Amlodipine Besylate	14
Levetiracetam	12
Carvedilol	11
Omeprazole	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Practice location

2301 Erwin Rd

Durham, NC 27705-4699

Phone: (919) 684-8111

Street-level locationGet directions

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Mailing address