2026 NPPES data Hospitalist Physician NPI 1194806885 M.D.
Verify on CMS →

LEO UY, M.D.

Hospitalist Physician in DOVER, New Hampshire. 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
2K
Medicare Part D claims · 325 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

LEO UY, M.D. filed 1,619 Medicare Part D claims in 2023 as a Hospitalist Physician in DOVER, New Hampshire, prescribing 80% generic.

2K
Part D claims, 2023
80%
generic prescribing
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.

LEO UY, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,619 Top 18% higher than 82% 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%). This entry sits in this band. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 certification likely (heuristic — not verified)

LEO UY, 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 LEO UY, M.D.?

Quality data not reported

NPI registry status

Active

Issued 10/18/2006

NPI 1194806885

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

1,619 82% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in New Hampshire

How Hospitalist Physician compares to other specialties among New Hampshire providers

New Hampshire providers

Hospitalist Physician share within New Hampshire

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within New Hampshire

Specialty board-certification context

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

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

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

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

LEO UY, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 789 CENTRAL AVE, DOVER, NH, 03820, with a listed phone of (603) 740-2503. NPI 1194806885 was issued on 10/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what UY 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 1,619 prescription claims written by this provider, covering 325 Medicare beneficiaries and totaling roughly $93K in drug spend, split 20% brand-name and 80% generic by claim count, with an opioid prescribing rate of 3.3%. 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

789 CENTRAL AVE
DOVER, NH 03820

Provider Details

NPI 1194806885
Specialty Hospitalist Physician
Credentials M.D.
Gender Male
NPI Issued 10/18/2006

Hospital and facility affiliations

Facilities where LEO UY, 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.

PERMANENTE MEDICAL GROUP INC
ROSEVILLE, CA

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

Brand vs generic prescribing mix · Typical

LEO UY, M.D. — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 1,619 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.

1,619
Total Claims
$93K
Total Drug Cost
325
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,228
Total Day Supply
52,459
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$53K
Generic Drug Cost
$39K
Opioid Claims
54 (3.3% rate)
Antibiotic Claims
93

Patient Demographics

Average Patient Age
78.3 years
Avg HCC Risk Score
2.30
Gender Split
57% female / 43% male
Age Distribution
<65: 19, 65-74: 92, 75-84: 128, 85+: 86

Top Prescribed Drugs (Medicare Part D)

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

What LEO UY, M.D. 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
107
Amlodipine Besylate
89
Furosemide
75
Levothyroxine Sodium
72
Metoprolol Tartrate
55
Tamsulosin Hcl
44
Gabapentin
43
Clopidogrel
Clopidogrel Bisulfate
31
Lisinopril
30
Losartan Potassium
30

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

Hospitalist Physician Overview

How LEO UY, M.D. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

LEO UY, M.D.'s 1,619 claims are above the specialty average of 888.

Nearby Hospitalist Physician Providers in New Hampshire

Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as UY.

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LEO UY, M.D.'s specialty?
LEO UY, M.D. specializes in Hospitalist Physician and practices in DOVER, New Hampshire. Credentials: M.D..
How much does LEO UY, M.D. prescribe under Medicare Part D?
In 2023, LEO UY, M.D. wrote 1,619 Medicare Part D claims totaling $93K in drug costs for 325 beneficiaries.
Where is LEO UY, M.D. located?
LEO UY, M.D. is located at 789 CENTRAL AVE, DOVER, NH, 03820. Phone: (603) 740-2503.
What is LEO UY, M.D.'s NPI number?
LEO UY, M.D.'s National Provider Identifier (NPI) is 1194806885, issued on 10/18/2006.
Does LEO UY, M.D. prescribe more brand-name or generic drugs?
LEO UY, M.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $53K in brand drug costs.
Does LEO UY, M.D. prescribe opioids?
Yes, LEO UY, M.D. had 54 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does LEO UY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, LEO UY, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LEO UY, M.D. accept Medicare?
LEO UY, M.D. appears in CMS Medicare data with 1,619 Part D claims and 325 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LEO UY, M.D.'s credentials?
LEO UY, M.D.'s NPI is 1194806885 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

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