DR. BLAIR SETH LEWIS M.D.
NPI 1689765521
Internal Medicine - Gastroenterology in New York, NY

Q: What is Blair Lewis's NPI number?

The NPI number for Blair Lewis is 1689765521. It was assigned to this individual provider in the NPPES registry on September 27, 2006.

Q: What is Blair Lewis's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Blair Lewis was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.

Active since September 27, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 33D1094281 · Waiver

88.42/100

CMS Quality Rating

1067 5TH AVE, NEW YORK, NY 10128(212) 369-6600(212) 369-8975 Get Directions Write a Review

NPPES record last updated: July 20, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

On this page

About Dr. Blair Seth Lewis M.d. NPPES

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

DR. BLAIR SETH LEWIS M.D. (NPI 1689765521) is an individual gastroenterology provider in New York, New York, licensed in New York (156442-1) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through January 14, 2027, and is affiliated with Greenwood Leflore Hospital.

NPPES Registry Identity

NPI1689765521

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. BLAIR SETH LEWISCredential: M.D.

Location Address1067 5TH AVENew York, NY 10128-0101

Mailing Address1067 5th AveNew York, NY 10128-0101 · (212) 369-6600 · Fax (212) 369-8975

Phone(212) 369-6600

Fax(212) 369-8975

Sole ProprietorNo

Medical School CMSOtherGraduated 1982

Enumeration DateSeptember 27, 2006

Last NPPES UpdateJuly 20, 2026

NPPES CertifiedJuly 20, 2026

✔ NPI 1689765521 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 · 156442-1

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.

1067 5TH AVE, New York, NY 10128

Open in Google Maps ↗

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. Blair Seth Lewis 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 ID4284791914

PECOS Enrollment IDI20090325000477

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.

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 Waiver 33D1094281

Blair S Lewis MD PC · New York, NY

Active · expires Jan 14, 2027

CLIA Number33D1094281

Laboratory TypePhysician Office

Certificate Effective DateJanuary 15, 2025

Certificate Expiration DateJanuary 14, 2027

Laboratory DirectorDr. Blair S. Lewis

Laboratory Phone(212) 369-6600

Laboratory LocationBlair S Lewis MD PC1067 Fifth Ave, New York, NY 10128

CLIA data matches this NPI record on: Phone

This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 14

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.

373 services344 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

159 services159 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.

92 services92 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

82 services82 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.

75 services73 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

66 services66 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.

62 services62 patients

Stool analysis for blood, by fecal hemoglobin determination by immunoassay 82274

A stool analysis for blood, or fecal hemoglobin determination by immunoassay, is a test that checks for hidden blood in your stool. This test helps identify potential issues in your digestive system. It involves collecting a small stool sample which is then analyzed in a lab for the presence of blood.

54 services54 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.

39 services39 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

37 services36 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

31 services31 patients

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.

26 services12 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

15 services15 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

15 services15 patients

Hospital Affiliations CMS Care Compare

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

Greenwood Leflore Hospital

Acute Care Hospitals · Greenwood, MS

1/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number250099

Location1401 River RdGreenwood, MS 38930 · Leflore County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10128 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.

88.42/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

81.81

Promoting Interoperability

100

Improvement Activities

Cost

79.6

Reported Quality Measures

Advance Care Plan

44%841 patients2/55-star benchmark: 100%

Closing the Referral Loop: Receipt of Specialist Report

24%42 patients2/55-star benchmark: 87%

Colorectal Cancer Screening

97%1,049 patients5/55-star benchmark: 88%

Controlling High Blood Pressure

16%380 patients1/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

97%1,731 patients4/55-star benchmark: 100%

e-Prescribing

100%649 patients5/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

56%553 patients3/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

29%416 patients2/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 0% · 103 patients

0%103 patients

Provide Patients Electronic Access to Their Health Information

90%526 patients4/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

89%742 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 861 patients

Patients totalRate: 4% · 863 patients

4%863 patients4/55-star benchmark: 100%

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.

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.

Iv pole E0776

DME-Other DME · category DE000N

1 supplier12 claims12 services$4.17 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 2

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

BLAIR S. LEWIS, M.D.,P.C.

Internal Medicine (Gastroenterology)

1067 5TH AVE
NEW YORK, NY 10128

New York County (212) 369-6600

ST KILDA MEDICAL SERVICE,PLLC

Specialist

1067 5TH AVE
NEW YORK, NY 10128

New York County (212) 874-3384

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 Blair Lewis's NPI number?

The NPI number for Blair Lewis is 1689765521. It was assigned to this individual provider in the NPPES registry on September 27, 2006.

Where is Blair Lewis located?

Blair Lewis practices at 1067 5th Ave, New York, NY 10128. The listed phone number is (212) 369-6600.

What is Blair Lewis's specialty?

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

Is Blair Lewis enrolled in Medicare?

Yes. Blair Lewis 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.

Does Blair Lewis hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D1094281) is associated with this NPI, valid through January 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

Is Blair Lewis affiliated with any hospitals?

According to CMS data, Blair Lewis is affiliated with Greenwood Leflore Hospital.

When was this NPI record last updated?

The NPPES record for Blair Lewis was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.