2026 NPPES data Internal Medicine Physician NPI 1871648170 MD
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HANNAH CHUNG, MD

Internal Medicine Physician in LAFAYETTE HILL, Pennsylvania. 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
4K
Medicare Part D claims · 377 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: HANNAH CHUNG, MD is a Internal Medicine Physician ([object Object]) practicing in LAFAYETTE HILL, Pennsylvania with a Medicare Part D prescribing footprint of 4K claims across 377 beneficiaries — 13% brand-name prescribing .

What stands out: HANNAH CHUNG, MD filed 4,221 Medicare Part D claims in 2023 across LAFAYETTE HILL, Pennsylvania. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

HANNAH CHUNG, 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).

HANNAH CHUNG, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 01/24/2007

NPI 1871648170

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

4,221 55% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Pennsylvania

How Internal Medicine Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Internal Medicine Physician share within Pennsylvania

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine 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).

HANNAH CHUNG, MD is a Internal Medicine Physician provider practicing in LAFAYETTE HILL, Pennsylvania, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1871648170. 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.

HANNAH CHUNG, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 443 GERMANTOWN PIKE, LAFAYETTE HILL, PA, 19444, with a listed phone of (484) 342-3000. NPI 1871648170 was issued on 01/24/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHUNG 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 4,221 prescription claims written by this provider, covering 377 Medicare beneficiaries and totaling roughly $491K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 2.2%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

443 GERMANTOWN PIKE
LAFAYETTE HILL, PA 19444

Provider Details

NPI 1871648170
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 01/24/2007

Hospital and facility affiliations

Facilities where HANNAH CHUNG, 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.

MAIN LINE HEALTHCARE
LAFAYETTE HILL, PA

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

License & disciplinary context — Pennsylvania PA-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to HANNAH CHUNG, MD. To verify HANNAH CHUNG, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

HANNAH CHUNG, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 4,221 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.

4,221
Total Claims
$491K
Total Drug Cost
377
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,527
Total Day Supply
279,402
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$420K
Generic Drug Cost
$69K
Opioid Claims
91 (2.2% rate)
Antibiotic Claims
69

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
0.97
Gender Split
64% female / 36% male
Age Distribution
<65: 15, 65-74: 215, 75-84: 109, 85+: 38

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
427
Rosuvastatin Calcium
174
Amlodipine Besylate
169
Levothyroxine Sodium
167
Losartan Potassium
123
Metformin Hcl
115
Omeprazole
110
Gabapentin
92
Lisinopril
91
Escitalopram Oxalate
87

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

Internal Medicine Physician Overview

How HANNAH CHUNG, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

HANNAH CHUNG, MD's 4,221 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Pennsylvania

Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as CHUNG.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HANNAH CHUNG, MD's specialty?
HANNAH CHUNG, MD specializes in Internal Medicine Physician and practices in LAFAYETTE HILL, Pennsylvania. Credentials: MD.
How much does HANNAH CHUNG, MD prescribe under Medicare Part D?
In 2023, HANNAH CHUNG, MD wrote 4,221 Medicare Part D claims totaling $491K in drug costs for 377 beneficiaries.
Where is HANNAH CHUNG, MD located?
HANNAH CHUNG, MD is located at 443 GERMANTOWN PIKE, LAFAYETTE HILL, PA, 19444. Phone: (484) 342-3000.
What is HANNAH CHUNG, MD's NPI number?
HANNAH CHUNG, MD's National Provider Identifier (NPI) is 1871648170, issued on 01/24/2007.
Does HANNAH CHUNG, MD prescribe more brand-name or generic drugs?
HANNAH CHUNG, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $420K in brand drug costs.
Does HANNAH CHUNG, MD prescribe opioids?
Yes, HANNAH CHUNG, MD had 91 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does HANNAH CHUNG, MD prescribe most often?
Based on 2023 Medicare Part D data, HANNAH CHUNG, MD's most frequently prescribed drugs include Atorvastatin Calcium, Rosuvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HANNAH CHUNG, MD accept Medicare?
HANNAH CHUNG, MD appears in CMS Medicare data with 4,221 Part D claims and 377 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HANNAH CHUNG, MD's credentials?
HANNAH CHUNG, MD's NPI is 1871648170 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