2026 NPPES data Surgery Physician NPI 1255661211 D.O.
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GERARD BALTAZAR, D.O.

Surgery Physician in GREENWICH, 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
29
Medicare Part D claims · 20 beneficiaries · Surgery Physician avg: 169
MIPS score
85.8788/100
▲ 3 pts above national avg 83.1 · [object Object]
Industry payments
$18.65
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GERARD BALTAZAR, D.O. is a Surgery Physician ([object Object]) practicing in GREENWICH, Connecticut with a Medicare Part D prescribing footprint of 29 claims across 20 beneficiaries . Their CMS MIPS Final Score of 85.8788/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $18.65 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GERARD BALTAZAR, D.O. reported a CMS MIPS final score of 85.8788 out of 100, above the 83.1 national average, and filed 29 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GERARD BALTAZAR, D.O. 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).

GERARD BALTAZAR, D.O. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 01/13/2010

NPI 1255661211

Primary specialty

Surgery Physician

Mid-sized

36,191 US NPIs in this specialty

Medicare Part D claims

29 83% vs specialty avg

2023 prescription claims

Specialty avg: 169

MIPS final score

85.8788/100 2.778800000000004% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Connecticut

How Surgery Physician compares to other specialties among Connecticut providers

Connecticut providers

Surgery Physician share within Connecticut

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

Medicare quality performance — MIPS

GERARD BALTAZAR, D.O.'s 2023 MIPS final score plotted against the Surgery Physician national average

High performer (top quartile)
MIPS Final Score
85.8788/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgery Physician) — 85.8788/100 vs national avg 83.1

0%100%National avg83%85.9%
MIPS final score (Surgery Physician) — 85.8788/100 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).

GERARD BALTAZAR, D.O. is a Surgery Physician provider practicing in GREENWICH, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1255661211. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GERARD BALTAZAR, D.O. appears in the CMS NPPES registry as a Surgery Physician provider holding D.O. credentials at 5 PERRYRIDGE RD, GREENWICH, CT, 06830, with a listed phone of (203) 863-3000. NPI 1255661211 was issued on 01/13/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BALTAZAR 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 29 prescription claims written by this provider, covering 20 Medicare beneficiaries and totaling roughly $459 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 85.8788/100 for the 2023 performance year (Quality 98.5832, Cost 85.557), compared with the national average of 83.1.

Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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

5 PERRYRIDGE RD
GREENWICH, CT 06830

Provider Details

NPI 1255661211
Specialty Surgery Physician
Credentials D.O.
Gender Male
NPI Issued 01/13/2010

CMS Quality Score (MIPS)

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

85.8788
Final Score
Avg: 83.1
98.5832
Quality
85.557
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where GERARD BALTAZAR, D.O. 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.

NEW YORK UNIVERSITY
NEW YORK, NY

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 GERARD BALTAZAR, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$19

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Medicare Part D Prescribing Data

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

29
Total Claims
$459
Total Drug Cost
20
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
29
Total Day Supply
334
Generic Drug Cost
$375
Antibiotic Claims
11

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
1.47
Age Distribution
<65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A

Surgery Physician Overview

How GERARD BALTAZAR, D.O. fits within the Surgery Physician landscape nationally.

36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider

GERARD BALTAZAR, D.O.'s 29 claims are below the specialty average of 169.

Nearby Surgery Physician Providers in Connecticut

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

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

Frequently Asked Questions

What is GERARD BALTAZAR, D.O.'s specialty?
GERARD BALTAZAR, D.O. specializes in Surgery Physician and practices in GREENWICH, Connecticut. Credentials: D.O..
How much does GERARD BALTAZAR, D.O. prescribe under Medicare Part D?
In 2023, GERARD BALTAZAR, D.O. wrote 29 Medicare Part D claims totaling $459 in drug costs for 20 beneficiaries.
What is GERARD BALTAZAR, D.O.'s Medicare quality score?
GERARD BALTAZAR, D.O. has a CMS MIPS Final Score of 85.8788/100 (Quality: 98.5832, Cost: 85.557). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GERARD BALTAZAR, D.O. located?
GERARD BALTAZAR, D.O. is located at 5 PERRYRIDGE RD, GREENWICH, CT, 06830. Phone: (203) 863-3000.
What is GERARD BALTAZAR, D.O.'s NPI number?
GERARD BALTAZAR, D.O.'s National Provider Identifier (NPI) is 1255661211, issued on 01/13/2010.
How many Surgery Physician providers are there in the US?
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
Does GERARD BALTAZAR, D.O. accept Medicare?
GERARD BALTAZAR, D.O. appears in CMS Medicare data with 29 Part D claims and 20 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GERARD BALTAZAR, D.O.'s credentials?
GERARD BALTAZAR, D.O.'s NPI is 1255661211 with credentials D.O.. 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