NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1376743872 M.D.
Verify on CMS → Calvin Han, M.D.
Hematology & Oncology Physician in Meadville, 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 11,232 in Hematology & Oncology 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
688
Medicare Part D claims · 91 beneficiaries · Hematology & Oncology Physician avg: 847
Industry payments
$1.5K
73 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Calvin Han, M.D. filed 688 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Meadville, Pennsylvania.
- 688
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Calvin Han, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
688 Top 31% higher than 69% 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 certification likely (heuristic, not verified)
Calvin Han, M.D. 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).
What does the federal data show about Calvin Han, M.D.?
Quality data not reportedPrimary specialty
Hematology & Oncology Physician
Medicare Part D claims
688 19% vs specialty avg
Specialty distribution in Pennsylvania
How Hematology & Oncology 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 Hematology & Oncology 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).
Calvin Han, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 16792 CONNEAUT LAKE RD, Meadville, PA, 16335, with a listed phone of (814) 373-2335. NPI 1376743872 was issued on 07/23/2007.
Medicare Part D records for calendar year 2023 show 688 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $864K in drug spend, with an opioid prescribing rate of 12.6%.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,232 enrolled providers across 54 states and an average of 847 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 | 1376743872 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/23/2007 |
Hospital and facility affiliations
Facilities where Calvin Han, M.D. 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.
Meadville Medical Center
★★★★☆ 4/5
Meadville, PA
Acute Care Hospitals
CMS CCN: 390113
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Calvin Han, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
Janssen Biotech, 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 Calvin Han, M.D.. To verify Calvin Han, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
688
Total Claims
$864K
Total Drug Cost
91
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 870
- Total Day Supply
- 22,581
- Generic Drug Cost
- $36K
- Opioid Claims
- 87 (12.6% rate)
- Antibiotic Claims
- 35
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.99
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Calvin Han, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
125 claims
- Dexamethasone 42
Dexamethasone
42 claims
- Prednisone 25
Prednisone
25 claims
- Ondansetron Odt 24
Ondansetron Odt
24 claims
- Valacyclovir 24
Valacyclovir
24 claims
- Bicalutamide 23
Bicalutamide
23 claims
- Eliquis 23
Eliquis
23 claims
- Venclexta 21
Venclexta
21 claims
| Drug | Claims |
|---|---|
| Anastrozole | 125 |
| Dexamethasone | 42 |
| Prednisone | 25 |
| Ondansetron Odt Ondansetron | 24 |
| Valacyclovir Valacyclovir Hcl | 24 |
| Bicalutamide | 23 |
| Eliquis Apixaban | 23 |
| Venclexta Venetoclax | 21 |
| Hydroxyurea | 20 |
| Potassium Chloride | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Calvin Han, M.D. fits within the Hematology & Oncology Physician landscape nationally.
11,232
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Calvin Han, M.D.'s 688 claims are below the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Han.
Dr. Abdullateef Abdulkareem
M.D.
Lancaster, PA
Dr. Charles Abrams
MD
Philadelphia, PA
Tala Achkar
Pittsburgh, PA
Dr. Monica Adedeji
MD, MPH
Hershey, PA
Dr. Giridhar Adiga
MD
Ephrata, PA
Compare Hematology & Oncology 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 Hematology & Oncology 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 Calvin Han, M.D.'s specialty? ▼
Calvin Han, M.D. specializes in Hematology & Oncology Physician and practices in Meadville, Pennsylvania. Credentials: M.D..
How much does Calvin Han, M.D. prescribe under Medicare Part D? ▼
In 2023, Calvin Han, M.D. wrote 688 Medicare Part D claims totaling $864K in drug costs for 91 beneficiaries.
Where is Calvin Han, M.D. located? ▼
Calvin Han, M.D. is located at 16792 CONNEAUT LAKE RD, Meadville, PA, 16335. Phone: (814) 373-2335.
What is Calvin Han, M.D.'s NPI number? ▼
Calvin Han, M.D.'s National Provider Identifier (NPI) is 1376743872, issued on 07/23/2007.
Does Calvin Han, M.D. prescribe opioids? ▼
Yes, Calvin Han, M.D. had 87 opioid claims in 2023 with an opioid prescribing rate of 12.6%.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,232 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Calvin Han, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Calvin Han, M.D.'s most frequently prescribed drugs include Anastrozole, Dexamethasone, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Calvin Han, M.D. accept Medicare? ▼
Calvin Han, M.D. appears in CMS Medicare data with 688 Part D claims and 91 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Calvin Han, M.D.'s credentials? ▼
Calvin Han, M.D.'s NPI is 1376743872 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.