NPI registry status
Active
2026 NPPES data Pediatrics Physician NPI 1265491419 M.D.
Verify on CMS → Hiewon Hann, M.D.
Pediatrics Physician in Phila, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 80,576 in Pediatrics Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
255
Medicare Part D claims · 49 beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$124.99
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Hiewon Hann, M.D. filed 255 Medicare Part D claims in 2023 as a Pediatrics Physician in Phila, Pennsylvania, prescribing 82% generic.
- 255
- Part D claims, 2023
- 82%
- generic prescribing
- $124.99
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Hiewon Hann, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
255 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Hiewon Hann, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Hiewon Hann, M.D.?
Quality data not reportedPrimary specialty
Pediatrics Physician
Medicare Part D claims
255 67% vs specialty avg
Specialty distribution in Pennsylvania
How Pediatrics Physician compares to other specialties among Pennsylvania providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pediatrics Physician. Verify directly:
How MIPS and board certification work
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).
Hiewon Hann, M.D. appears in the CMS NPPES registry as a Pediatrics Physician provider holding M.D. credentials at 132 S 10TH ST, Phila, PA, 19107, with a listed phone of (215) 955-8900. NPI 1265491419 was issued on 03/17/2006.
Medicare Part D records for calendar year 2023 show 255 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $108K in drug spend, split 18% brand-name and 82% generic by claim count.
Pediatrics Physician is a high-volume specialty nationwide, with 80,576 enrolled providers across 56 states and an average of 762 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
Provider Details
| NPI | 1265491419 |
|---|---|
| Specialty | Pediatrics Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 03/17/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Hiewon Hann, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$125
Largest payer
Gilead Sciences, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Hiewon Hann, M.D.. To verify Hiewon Hann, M.D.'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
Hiewon Hann, M.D. - brand share 18.0%
Pediatrics Physician average
18% brand-name claims vs 82% generic, on 255 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.
255
Total Claims
$108K
Total Drug Cost
49
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 419
- Total Day Supply
- 12,525
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $67K
- Generic Drug Cost
- $40K
Patient Demographics
- Average Patient Age
- 72.3 years
- Avg HCC Risk Score
- 0.95
- Gender Split
- 51% female / 49% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Hiewon Hann, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tenofovir Disoprox…
Tenofovir Disoproxil Fumarate
123 claims
- Vemlidy 44
Vemlidy
44 claims
- Lamivudine 40
Lamivudine
40 claims
- Entecavir 16
Entecavir
16 claims
| Drug | Claims |
|---|---|
| Tenofovir Disoproxil Fumarate | 123 |
| Vemlidy Tenofovir Alafenamide | 44 |
| Lamivudine | 40 |
| Entecavir | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pediatrics Physician Overview
How Hiewon Hann, M.D. fits within the Pediatrics Physician landscape nationally.
80,576
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider
Hiewon Hann, M.D.'s 255 claims are below the specialty average of 762.
Nearby Pediatrics Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Hann.
Dr. Arvin Abadilla
M.D.
Hershey, PA
Dr. Tarik Abanoz
MD
Allentown, PA
Dr. Francisca Abanyie
MD MPH
Philadelphia, PA
Dr. Soraya Abbasi
MD
Philadelphia, PA
Dr. Hoda Abdel-Hamid
MD
Pittsburgh, PA
Compare Pediatrics Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pediatrics Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Hiewon Hann, M.D.'s specialty? ▼
Hiewon Hann, M.D. specializes in Pediatrics Physician and practices in Phila, Pennsylvania. Credentials: M.D..
How much does Hiewon Hann, M.D. prescribe under Medicare Part D? ▼
In 2023, Hiewon Hann, M.D. wrote 255 Medicare Part D claims totaling $108K in drug costs for 49 beneficiaries.
Where is Hiewon Hann, M.D. located? ▼
Hiewon Hann, M.D. is located at 132 S 10TH ST, Phila, PA, 19107. Phone: (215) 955-8900.
What is Hiewon Hann, M.D.'s NPI number? ▼
Hiewon Hann, M.D.'s National Provider Identifier (NPI) is 1265491419, issued on 03/17/2006.
Does Hiewon Hann, M.D. prescribe more brand-name or generic drugs? ▼
Hiewon Hann, M.D.'s prescribing is 18% brand-name and 82% generic drugs by claim count, with $67K in brand drug costs.
How many Pediatrics Physician providers are there in the US? ▼
There are 80,576 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does Hiewon Hann, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Hiewon Hann, M.D.'s most frequently prescribed drugs include Tenofovir Disoproxil Fumarate, Vemlidy, Lamivudine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hiewon Hann, M.D. accept Medicare? ▼
Hiewon Hann, M.D. appears in CMS Medicare data with 255 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hiewon Hann, M.D.'s credentials? ▼
Hiewon Hann, M.D.'s NPI is 1265491419 with credentials M.D.. 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.