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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GERARD ANTHONY BALTAZAR D.O.
NPI 1255661211
Surgery in Greenwich, CT

Active since January 13, 2010PECOS EnrolledAccepts Medicare Assignment
85.87/100
CMS Quality Rating
5 PERRYRIDGE RD, GREENWICH, CT 06830(203) 863-3000 Get Directions Write a Review

NPPES record last updated: July 4, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 7, 2026, Feb 22, 2021, Feb 10, 2016 (3 updates tracked since 2016).

About Dr. Gerard Anthony Baltazar D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GERARD ANTHONY BALTAZAR D.O. (NPI 1255661211) is an individual surgery provider in Greenwich, Connecticut, licensed in New York (255827) and active in the NPI registry since January 2010. He is enrolled in Medicare PECOS, is affiliated with Nyu Langone Hospitals, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1255661211
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameDR. GERARD ANTHONY BALTAZARCredential: D.O.
Location Address5 PERRYRIDGE RDGreenwich, CT 06830-4608
Mailing Address600 Mamaroneck Ave Ste 400Harrison, NY 10528-1613 · (914) 274-4955
Phone(203) 863-3000
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateJanuary 13, 2010
Last NPPES UpdateJuly 4, 20263 updates tracked since enumeration
NPPES CertifiedJuly 4, 2026
✔ NPI 1255661211 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in NY · 255827
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 255827 (NY)
Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X · License 255827 (NY)
Also ListedGeneral PracticeTaxonomy 208D00000X · License 255827 (NY)
5 PERRYRIDGE RD, Greenwich, CT 06830
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gerard Anthony Baltazar D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305151796
PECOS Enrollment IDI20150813011496
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
291 services137 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
161 services84 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
67 services66 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
62 services43 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
58 services57 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
34 services30 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330214
Location550 First AvenueNew York, NY 10016 · New York County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06830 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.87/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality98.58
Improvement Activities0
Cost85.55

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Transport chair, adult size, patient weight capacity up to and including 300 pounds E1038
DME-Other DME · category DE000N
1 supplier11 claims11 services$7.67 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ZARA NADIA ILAHI MD
Pediatrics (Neonatal-Perinatal Medicine)
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
SARAH STAMPER M.D.
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD, MEDICAL EDUCATION
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3409
JUNE EVELYN JEON MD
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
ARIANA DOMINICUS PA-C
Physician Assistant
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
ERIC LI-MING HUANG BSC, PHARMD
Pharmacist (Pharmacotherapy)
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3199
ROSEMARY PERLEY-KWAUK CRNA
Nurse Anesthetist, Certified Registered
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 661-5330
DR. FRANCISCO J BREA MD
Anesthesiology
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 661-5330
ANNE YAN TING CHUA MBBS
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3409

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gerard Baltazar's NPI number?

The NPI number for Gerard Baltazar is 1255661211. It was assigned to this individual provider in the NPPES registry on January 13, 2010.

Where is Gerard Baltazar located?

Gerard Baltazar practices at 5 Perryridge Rd, Greenwich, CT 06830. The listed phone number is (203) 863-3000.

What is Gerard Baltazar's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Gerard Baltazar enrolled in Medicare?

Yes. Gerard Baltazar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Gerard Baltazar affiliated with any hospitals?

According to CMS data, Gerard Baltazar is affiliated with Nyu Langone Hospitals.

When was this NPI record last updated?

The NPPES record for Gerard Baltazar was last updated on July 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.