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FRANK S SAMMARCO M.D.
NPI 1407953920
Internal Medicine - Gastroenterology in Norwalk, CT

Active since September 19, 2006PECOS EnrolledAccepts Medicare Assignment
84.47/100
CMS Quality Rating
761 MAIN AVE, SUITE 201, NORWALK, CT 06851(203) 838-4000(203) 845-9535 Get Directions Write a Review

NPPES record last updated: December 16, 2011. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Frank S Sammarco M.d. NPPES

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

FRANK S SAMMARCO M.D. (NPI 1407953920) is an individual gastroenterology provider in Norwalk, Connecticut, licensed in Connecticut (029157) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1979).

NPPES Registry Identity

NPI1407953920
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameFRANK S SAMMARCOCredential: M.D.
Location Address761 MAIN AVE, SUITE 201Norwalk, CT 06851-1080
Mailing Address761 Main Ave, Suite 201Norwalk, CT 06851-1080 · (203) 838-4000 · Fax (203) 845-9535
Phone(203) 838-4000
Fax(203) 845-9535
Sole ProprietorNo
Medical School CMSOtherGraduated 1979
Enumeration DateSeptember 19, 2006
Last NPPES UpdateDecember 16, 2011
✔ NPI 1407953920 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 CT · 029157
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.
761 MAIN AVE, Norwalk, CT 06851
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINE40374CT
Medicaid004187466CT
Medicare ID-Type Unspecified100000273CT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Frank S Sammarco 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 ID3779584248
PECOS Enrollment IDI20100119000401
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

2

Medicare enrollment records show Frank Sammarco reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Norwalk Hospital Association
3.3 mi
General Acute Care Hospital
34 MAPLE ST
Norwalk, CT 06850
  • Reassigned Medicare billing, Connecticut enrollment
  • 113 clinicians in this Medicare group
NPI 1427041581 (203) 852-2216
Hartford Healthcare Medical Group Specialists, PLLC
56 mi
Surgery
85 SEYMOUR ST STE 415
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,921 clinicians in this Medicare group
NPI 1023584216 (860) 246-2071

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

Areas of Expertise CMS Part B claims 11

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.

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.
183 services153 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
123 services118 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
112 services112 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
80 services80 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.
66 services66 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.
57 services56 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06851 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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.

84.47/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality79.28
Promoting Interoperability100
Improvement Activities40
Cost59.59

Reported Quality Measures

Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
57%636 patients
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
95%1,340 patients5/55-star benchmark: 85%
Diabetes: Medical Attention for Nephropathy
The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period
94%241 patients4/55-star benchmark: 99%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
99%2,213 patients4/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
95%2,034 patients4/55-star benchmark: 99%
Falls: Screening for Future Fall Risk
Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period
27%732 patients2/55-star benchmark: 99%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
99%1,110 patients4/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
76%1,795 patients4/55-star benchmark: 97%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
62%732 patients3/55-star benchmark: 90%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
26%1,795 patients2/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
31%1,795 patients2/55-star benchmark: 89%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 732 patients
0%732 patients5/55-star benchmark: 100%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
24%1,795 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 20

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

CHRISTINA CHAO P.A.
Physician Assistant
761 MAIN AVE, SUITE 102
NORWALK, CT 06851
Western Connecticut Planning Region (203) 810-4151
ILLUME FERTILITY, PLLC
Obstetrics & Gynecology (Reproductive Endocrinology)
761 MAIN AVE, SUITE 200
NORWALK, CT 06851
Western Connecticut Planning Region (203) 750-7400
ILLUME FERTILITY, PLLC
Clinic/Center (Ambulatory Fertility Facility)
761 MAIN AVE, SUITE 200
NORWALK, CT 06851
Western Connecticut Planning Region (203) 750-7400
PAULINE ANNE SHARMA PA-C
Physician Assistant
761 MAIN AVE, SUITE 101
NORWALK, CT 06851
Western Connecticut Planning Region (203) 845-2244
SPENCER S. RICHLIN MD
Obstetrics & Gynecology (Reproductive Endocrinology)
761 MAIN AVE, SUITE 200
NORWALK, CT 06851
Western Connecticut Planning Region (203) 750-7400
MARIA A MARTIN M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
761 MAIN AVE, SUITE 201
NORWALK, CT 06851
Western Connecticut Planning Region (203) 838-4000
DR. FRANK JOHN PINTO JR. MD
Dermatology
761 MAIN AVE, SUITE 102
NORWALK, CT 06851
Western Connecticut Planning Region (203) 810-4151
DR. MANDY SHER GREENBERG M.D.
Surgery (Surgical Oncology)
761 MAIN AVE, SUITE 203
NORWALK, CT 06851
Western Connecticut Planning Region (203) 846-6012

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 Frank Sammarco's NPI number?

The NPI number for Frank Sammarco is 1407953920. It was assigned to this individual provider in the NPPES registry on September 19, 2006.

Where is Frank Sammarco located?

Frank Sammarco practices at 761 Main Ave Suite 201, Norwalk, CT 06851. The listed phone number is (203) 838-4000.

What is Frank Sammarco's specialty?

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

Is Frank Sammarco enrolled in Medicare?

Yes. Frank Sammarco 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 Frank Sammarco's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Frank Sammarco reassigns Medicare benefits to 2 organizations: Norwalk Hospital Association (Norwalk, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). 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 Frank Sammarco's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Frank Sammarco accept?

Health plans from Anthem Blue Cross and Blue Shield list Frank Sammarco as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Frank Sammarco was last updated on December 16, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.