2026 NPPES data Family Medicine Physician NPI 1235310004 MD
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Hanh-Dung Som, MD

Family Medicine Physician in Bethlehem, 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 147,640 in Family Medicine 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
2K
Medicare Part D claims · 231 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
82%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Hanh-Dung Som, MD filed 2,038 Medicare Part D claims in 2023 as a Family Medicine Physician in Bethlehem, Pennsylvania, prescribing 82% generic.

2K
Part D claims, 2023
82%
generic prescribing

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.

Hanh-Dung Som, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,038 Top 16% higher than 84% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

Hanh-Dung Som, MD 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 Hanh-Dung Som, MD?

Quality data not reported

NPI registry status

Active

Issued 11/20/2007

NPI 1235310004

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

2,038 40% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Pennsylvania

How Family Medicine Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Largest specialties in Pennsylvania (% of in-state providers)

Student in an Organized Health Care Education/Training Program — 5.6%Student in an Organized Health Care Education/Training Program5.6%Pharmacist — 5%Pharmacist5%Physical Therapist — 4.9%Physical Therapist4.9%Mental Health Counselor — 3.9%Mental Health Counselor3.9%Internal Medicine Physician — 3.3%Internal Medicine Physician3.3%Professional Counselor — 3.2%Professional Counselor3.2%Family Medicine Physician — 2.8%Family Medicine Physician2.8%
Largest specialties in Pennsylvania (% of in-state providers)

Specialty board-certification context

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

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

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

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

Hanh-Dung Som, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 3101 EMRICK BLVD, Bethlehem, PA, 18020, with a listed phone of (610) 419-6426. NPI 1235310004 was issued on 11/20/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Som 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 2,038 prescription claims written by this provider, covering 231 Medicare beneficiaries and totaling roughly $327K in drug spend, split 16% brand-name and 82% 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

3101 EMRICK BLVD
Bethlehem, PA 18020

Provider Details

NPI 1235310004
Specialty Family Medicine Physician
Credentials MD
Gender Female
NPI Issued 11/20/2007

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 Hanh-Dung Som, MD. To verify Hanh-Dung Som, 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

Hanh-Dung Som, MD — brand share 16.0%
Family Medicine Physician average

16% brand-name claims vs 82% generic, on 2,038 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.

2,038
Total Claims
$327K
Total Drug Cost
231
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,873
Total Day Supply
144,595
Brand vs Generic
16% brand / 82% generic
Brand Drug Cost
$285K
Generic Drug Cost
$40K
Antibiotic Claims
18

Patient Demographics

Average Patient Age
71.7 years
Avg HCC Risk Score
1.33
Gender Split
71% female / 29% male
Age Distribution
<65: 37, 65-74: 100, 75-84: 74, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

What Hanh-Dung Som, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
105
Levothyroxine Sodium
91
Lisinopril
89
Amlodipine Besylate
84
Losartan Potassium
72
Rosuvastatin Calcium
58
Metoprolol Succinate
55
Metformin Hcl Er
Metformin Hcl
52
Omeprazole
43
Allopurinol
39

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

Family Medicine Physician Overview

How Hanh-Dung Som, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

Hanh-Dung Som, MD's 2,038 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Pennsylvania

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

Compare Family Medicine 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 Family Medicine 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.

Frequently Asked Questions

What is Hanh-Dung Som, MD's specialty?
Hanh-Dung Som, MD specializes in Family Medicine Physician and practices in Bethlehem, Pennsylvania. Credentials: MD.
How much does Hanh-Dung Som, MD prescribe under Medicare Part D?
In 2023, Hanh-Dung Som, MD wrote 2,038 Medicare Part D claims totaling $327K in drug costs for 231 beneficiaries.
Where is Hanh-Dung Som, MD located?
Hanh-Dung Som, MD is located at 3101 EMRICK BLVD, Bethlehem, PA, 18020. Phone: (610) 419-6426.
What is Hanh-Dung Som, MD's NPI number?
Hanh-Dung Som, MD's National Provider Identifier (NPI) is 1235310004, issued on 11/20/2007.
Does Hanh-Dung Som, MD prescribe more brand-name or generic drugs?
Hanh-Dung Som, MD's prescribing is 16% brand-name and 82% generic drugs by claim count, with $285K in brand drug costs.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Hanh-Dung Som, MD prescribe most often?
Based on 2023 Medicare Part D data, Hanh-Dung Som, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hanh-Dung Som, MD accept Medicare?
Hanh-Dung Som, MD appears in CMS Medicare data with 2,038 Part D claims and 231 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hanh-Dung Som, MD's credentials?
Hanh-Dung Som, MD's NPI is 1235310004 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

Compiled from official public sources by the PlainDoctor editorial team.