2026 NPPES data Medical Oncology Physician NPI 1871583328 MD
Verify on CMS →

STUART SEROPIAN, MD

Medical Oncology Physician in NEW HAVEN, Connecticut. 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
412
Medicare Part D claims · 78 beneficiaries · Medical Oncology Physician avg: 689
MIPS score
73.5637/100
▼ 10 pts below national avg 83.1 · [object Object]

What the federal data shows

STUART SEROPIAN, MD reported a CMS MIPS final score of 73.5637/100 — below the 83.1 national average — and filed 412 Medicare Part D claims in 2023.

73.5637/100
MIPS score · -10 vs avg
412
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.

STUART SEROPIAN, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

74 11th percentile higher than 11% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

STUART SEROPIAN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 STUART SEROPIAN, MD?

Below national average

NPI registry status

Active

Issued 10/26/2005

NPI 1871583328

Primary specialty

Medical Oncology Physician

Niche

3,792 US NPIs in this specialty

Medicare Part D claims

412 40% vs specialty avg

2023 prescription claims

Specialty avg: 689

MIPS final score

73.5637/100 9.536299999999997% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Connecticut

How Medical Oncology Physician compares to other specialties among Connecticut providers

Connecticut providers

Medical Oncology Physician share within Connecticut

1. Medical Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Oncology Physician share within Connecticut

Medicare quality performance — MIPS

STUART SEROPIAN, MD's 2023 MIPS final score plotted against the Medical Oncology Physician national average

Below national average
MIPS Final Score
73.5637/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Oncology Physician) — 73.5637/100 vs national avg 83.1

0%100%National avg83%73.6%
MIPS final score (Medical Oncology Physician) — 73.5637/100 vs national avg 83.1

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).

STUART SEROPIAN, MD appears in the CMS NPPES registry as a Medical Oncology Physician provider holding MD credentials at 800 HOWARD AVE, NEW HAVEN, CT, 06519, with a listed phone of (203) 785-4191. NPI 1871583328 was issued on 10/26/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SEROPIAN 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 412 prescription claims written by this provider, covering 78 Medicare beneficiaries and totaling roughly $901K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.5637/100 for the 2023 performance year (Quality 75.8435, Cost 51.4318), compared with the national average of 83.1.

Medical Oncology Physician is a narrow specialty nationwide, with 3,792 enrolled providers across 53 states and an average of 689 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

800 HOWARD AVE
NEW HAVEN, CT 06519

Provider Details

NPI 1871583328
Specialty Medical Oncology Physician
Credentials MD
Gender Male
NPI Issued 10/26/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

73.5637
Final Score
Avg: 83.1
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where STUART SEROPIAN, 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.

YALE UNIVERSITY
NEW HAVEN, CT

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

Medicare Part D Prescribing Data

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

412
Total Claims
$901K
Total Drug Cost
78
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
568
Total Day Supply
15,058
Generic Drug Cost
$27K
Antibiotic Claims
18

Patient Demographics

Average Patient Age
67.1 years
Avg HCC Risk Score
3.99
Gender Split
55% female / 45% male
Age Distribution
<65: 15, 65-74: 51, 75-84: 12, 85+: 0

Top Prescribed Drugs (Medicare Part D)

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

What STUART SEROPIAN, 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
Acyclovir
59
Jakafi
Ruxolitinib Phosphate
22
Pantoprazole Sodium
17
Dexamethasone
14
Gabapentin
13
Prednisone
13
Rezurock
Belumosudil Mesylate
12
Ondansetron Hcl
11
Boostrix Tdap
"Diphth
N/A

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

Medical Oncology Physician Overview

How STUART SEROPIAN, MD fits within the Medical Oncology Physician landscape nationally.

3,792
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider

STUART SEROPIAN, MD's 412 claims are below the specialty average of 689.

Nearby Medical Oncology Physician Providers in Connecticut

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

Compare Medical Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STUART SEROPIAN, MD's specialty?
STUART SEROPIAN, MD specializes in Medical Oncology Physician and practices in NEW HAVEN, Connecticut. Credentials: MD.
How much does STUART SEROPIAN, MD prescribe under Medicare Part D?
In 2023, STUART SEROPIAN, MD wrote 412 Medicare Part D claims totaling $901K in drug costs for 78 beneficiaries.
What is STUART SEROPIAN, MD's Medicare quality score?
STUART SEROPIAN, MD has a CMS MIPS Final Score of 73.5637/100 (Quality: 75.8435, Cost: 51.4318). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STUART SEROPIAN, MD located?
STUART SEROPIAN, MD is located at 800 HOWARD AVE, NEW HAVEN, CT, 06519. Phone: (203) 785-4191.
What is STUART SEROPIAN, MD's NPI number?
STUART SEROPIAN, MD's National Provider Identifier (NPI) is 1871583328, issued on 10/26/2005.
How many Medical Oncology Physician providers are there in the US?
There are 3,792 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does STUART SEROPIAN, MD prescribe most often?
Based on 2023 Medicare Part D data, STUART SEROPIAN, MD's most frequently prescribed drugs include Acyclovir, Jakafi, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STUART SEROPIAN, MD accept Medicare?
STUART SEROPIAN, MD appears in CMS Medicare data with 412 Part D claims and 78 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STUART SEROPIAN, MD's credentials?
STUART SEROPIAN, MD's NPI is 1871583328 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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