2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1396912051 MD
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JANICE HWANG, MD

Endocrinology, Diabetes & Metabolism Physician in CHAPEL HILL, North Carolina. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
179
Medicare Part D claims · 28 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
29%
generic claims · 71% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JANICE HWANG, MD is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in CHAPEL HILL, North Carolina with a Medicare Part D prescribing footprint of 179 claims across 28 beneficiaries — 71% brand-name prescribing .

What stands out: JANICE HWANG, MD filed 179 Medicare Part D claims in 2023 across CHAPEL HILL, North Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JANICE HWANG, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

JANICE HWANG, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/13/2008

NPI 1396912051

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

179 93% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in North Carolina

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among North Carolina providers

North Carolina providers

Endocrinology, Diabetes & Metabolism Physician share within North Carolina

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within North Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

JANICE HWANG, MD is a Endocrinology, Diabetes & Metabolism Physician provider practicing in CHAPEL HILL, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1396912051. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JANICE HWANG, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 101 MANNING DR, CHAPEL HILL, NC, 27514, with a listed phone of (919) 966-7890. NPI 1396912051 was issued on 05/13/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HWANG most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 179 prescription claims written by this provider, covering 28 Medicare beneficiaries and totaling roughly $141K in drug spend, split 71% brand-name and 29% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

101 MANNING DR
CHAPEL HILL, NC 27514

Provider Details

NPI 1396912051
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Female
NPI Issued 05/13/2008

Hospital and facility affiliations

Facilities where JANICE HWANG, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
CHAPEL HILL, NC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Brand-heavy

JANICE HWANG, MD — brand share 71.0%
Specialty average (est.)

71% brand-name claims vs 29% generic, on 179 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

179
Total Claims
$141K
Total Drug Cost
28
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
286
Total Day Supply
8,337
Brand vs Generic
71% brand / 29% generic
Brand Drug Cost
$136K

Patient Demographics

Average Patient Age
64.4 years
Avg HCC Risk Score
2.17
Gender Split
43% female / 57% male
Age Distribution
<65: 13, 65-74: N/A, 75-84: N/A, 85+: 0

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Ozempic
Semaglutide
38
Jardiance
Empagliflozin
28
Pioglitazone Hcl
20
Januvia
Sitagliptin Phosphate
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Endocrinology, Diabetes & Metabolism Physician Overview

How JANICE HWANG, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

JANICE HWANG, MD's 179 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as HWANG.

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JANICE HWANG, MD's specialty?
JANICE HWANG, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in CHAPEL HILL, North Carolina. Credentials: MD.
How much does JANICE HWANG, MD prescribe under Medicare Part D?
In 2023, JANICE HWANG, MD wrote 179 Medicare Part D claims totaling $141K in drug costs for 28 beneficiaries.
Where is JANICE HWANG, MD located?
JANICE HWANG, MD is located at 101 MANNING DR, CHAPEL HILL, NC, 27514. Phone: (919) 966-7890.
What is JANICE HWANG, MD's NPI number?
JANICE HWANG, MD's National Provider Identifier (NPI) is 1396912051, issued on 05/13/2008.
Does JANICE HWANG, MD prescribe more brand-name or generic drugs?
JANICE HWANG, MD's prescribing is 71% brand-name and 29% generic drugs by claim count, with $136K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does JANICE HWANG, MD prescribe most often?
Based on 2023 Medicare Part D data, JANICE HWANG, MD's most frequently prescribed drugs include Ozempic, Jardiance, Pioglitazone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JANICE HWANG, MD accept Medicare?
JANICE HWANG, MD appears in CMS Medicare data with 179 Part D claims and 28 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JANICE HWANG, MD's credentials?
JANICE HWANG, MD's NPI is 1396912051 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology