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DR. GIL IGNACIO ASCUNCE M.D.
NPI 1023265428
Internal Medicine - Gastroenterology in New York, NY

Active since August 27, 2008PECOS EnrolledAccepts Medicare AssignmentCLIA 33D2158257 · Certificate of Compliance
161 MADISON AVE RM 10SW, NEW YORK, NY 10016(212) 889-2400(212) 889-2494 Get Directions Write a Review

NPPES record last updated: January 23, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 23, 2020, Apr 15, 2019 (2 updates tracked since 2019).

About Dr. Gil Ignacio Ascunce M.d. NPPES

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

DR. GIL IGNACIO ASCUNCE M.D. (NPI 1023265428) is an individual gastroenterology provider in New York, New York, licensed in New York (242599) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, holds a CLIA Certificate of Compliance certificate valid through March 26, 2027, and is affiliated with Chenango Memorial Hospital.

NPPES Registry Identity

NPI1023265428
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. GIL IGNACIO ASCUNCECredential: M.D.
Location Address161 MADISON AVE RM 10SWNew York, NY 10016-5440
Mailing AddressPo Box 2339New York, NY 10021-0056 · (212) 889-2400 · Fax (212) 889-2494
Phone(212) 889-2400
Fax(212) 889-2494
Sole ProprietorYes
Medical School CMSGeorgetown University School Of MedicineGraduated 2004
Enumeration DateAugust 27, 2008
Last NPPES UpdateJanuary 23, 20202 updates tracked since enumeration
✔ NPI 1023265428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 242599
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
161 MADISON AVE RM 10SW, New York, NY 10016
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gil Ignacio Ascunce M.d. 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 ID648463927
PECOS Enrollment IDI20101019000815
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.

Medicare Billing Reassignments

6

Medicare enrollment records show Gil Ascunce reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gil I Ascunce MD PC
Same address
Gastroenterology
161 MADISON AVE RM 10SW
New York, NY 10016
  • Reassigned Medicare billing, New York enrollment
  • 2 clinicians in this Medicare group
NPI 1356797856 (212) 889-2400
Icahn School Of Medicine At Mount Sinai
0.1 mi
Internal Medicine
55 WEST 34TH STREET, 1ST FLOOR
New York, NY 10016
  • Reassigned Medicare billing, New York enrollment
  • 346 clinicians in this Medicare group
NPI 1568868834 (212) 252-6231
Icahn School Of Medicine At Mount Sinai
3.4 mi
Gastroenterology
1 GUSTAVE L LEVY PL
New York, NY 10029
  • Reassigned Medicare billing, New York enrollment
  • 104 clinicians in this Medicare group
NPI 1730440777 (212) 987-3100
Brain & Spine Surgeons Of New York PC
23 mi
Surgery
4 WESTCHESTER PARK DR FL 4
White Plains, NY 10604
  • Reassigned Medicare billing, New York enrollment
  • 20 clinicians in this Medicare group
NPI 1992921407 (914) 948-8448
United Health Services Hospitals, Inc.
139 mi
Multi-Specialty
33-57 HARRISON ST.
Johnson City, NY 13790
  • Reassigned Medicare billing, New York enrollment
  • 854 clinicians in this Medicare group
NPI 1962463851 (607) 762-3027
United Medical Associates PC
140 mi
Clinic/Center
33 LEWIS ROAD, 2ND FLOOR
Binghamton, NY 13905
  • Reassigned Medicare billing, New York enrollment
  • 528 clinicians in this Medicare group
NPI 1013972801 (607) 770-0025

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 33D2158257

Gil I Ascunce, MD PC · New York, NY
Active · expires Mar 26, 2027
CLIA Number33D2158257
Laboratory TypePhysician Office
Certificate Effective DateOctober 30, 2023
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Gabriel S. Levi
Laboratory Phone(212) 889-2400
Laboratory LocationGil I Ascunce, MD PC161 Madison Avenue - Ste 10sw, New York, NY 10016
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
239 services54 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
137 services27 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
128 services27 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
82 services21 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
46 services37 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
43 services43 patients

Hospital Affiliations CMS Care Compare 2

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

Chenango Memorial Hospital

Acute Care Hospitals · Norwich, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330033
Location179 North Broad StreetNorwich, NY 13815 · Chenango County
Emergency services Birthing friendly

United Health Services Hospitals, Inc

Acute Care Hospitals · Binghamton, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330394
Location10-42 Mitchell AvenueBinghamton, NY 13903 · Broome County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10016 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
Most-billed visit code 99214
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.

Reported Quality Measures

Appropriate Follow-Up Interval for Normal Colonoscopy in Average Risk Patients
Percentage of patients aged 50 to 75 years of age receiving a screening colonoscopy without biopsy or polypectomy who had a recommended follow-up interval of at least 10 years for repeat colonoscopy documented in their colonoscopy report
99%95 patients
Appropriate indication for colonoscopy
Percentage of colonoscopy procedures performed for an indication that is included in a published standard list of appropriate indications and the indication is documented
94%490 patients4/55-star benchmark: 99%
NHCR4: Repeat screening or surveillance colonoscopy recommended within one year due to inadequate/poor bowel preparation
Percentage of patients recommended for repeat screening or surveillance colonoscopy within one year or less due to inadequate/poor bowel preparation quality
78%40 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES

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

GIL I ASCUNCE MD PC
Internal Medicine (Gastroenterology)
161 MADISON AVE RM 10SW
NEW YORK, NY 10016
New York County (212) 889-2400

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 Gil Ascunce's NPI number?

The NPI number for Gil Ascunce is 1023265428. It was assigned to this individual provider in the NPPES registry on August 27, 2008.

Where is Gil Ascunce located?

Gil Ascunce practices at 161 Madison Ave Rm 10sw, New York, NY 10016. The listed phone number is (212) 889-2400.

What is Gil Ascunce's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Gil Ascunce enrolled in Medicare?

Yes. Gil Ascunce 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.

Which organizations bill Medicare for Gil Ascunce's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gil Ascunce reassigns Medicare benefits to 6 organizations: Gil I Ascunce MD PC (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Brain & Spine Surgeons Of New York PC (White Plains, NY), United Health Services Hospitals, Inc. (Johnson City, NY) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gil Ascunce's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Gil Ascunce hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 33D2158257) is associated with this NPI, valid through March 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

Is Gil Ascunce affiliated with any hospitals?

According to CMS data, Gil Ascunce is affiliated with Chenango Memorial Hospital and United Health Services Hospitals, Inc.

When was this NPI record last updated?

The NPPES record for Gil Ascunce was last updated on January 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.