DR. PETER ALEX NAAS M.D.
NPI 1215135199
Internal Medicine - Gastroenterology in Greenville, SC

Q: What is Peter Naas's NPI number?

The NPI number for Peter Naas is 1215135199. It was assigned to this individual provider in the NPPES registry on July 3, 2007.

Q: What is Peter Naas'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 Peter Naas was last updated on May 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since July 03, 2007PECOS EnrolledAccepts Medicare Assignment

125 HALTON RD STE 200, GREENVILLE, SC 29607(864) 232-7338 Get Directions Write a Review

NPPES record last updated: May 20, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Peter Alex Naas M.d. NPPES

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

DR. PETER ALEX NAAS M.D. (NPI 1215135199) is an individual gastroenterology provider in Greenville, South Carolina, licensed in South Carolina (30027) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, is affiliated with Spartanburg Medical Center, and is a graduate of University Of Louisville School Of Medicine (2007).

NPPES Registry Identity

NPI1215135199

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. PETER ALEX NAASCredential: M.D.

Location Address125 HALTON RD STE 200Greenville, SC 29607-3507

Mailing AddressPo Box 8676Greenville, SC 29604-8676 · (864) 232-7338 · Fax (864) 239-6645

Phone(864) 232-7338

Sole ProprietorNo

Medical School CMSUniversity Of Louisville School Of MedicineGraduated 2007

Enumeration DateJuly 3, 2007

Last NPPES UpdateMay 20, 2024

NPPES CertifiedMay 20, 2024

✔ NPI 1215135199 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 SC · 30027

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.

125 HALTON RD STE 200, Greenville, SC 29607

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of South Carolina, InStil Health, Molina Healthcare.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

Dr. Peter Alex Naas 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 ID4486813961

PECOS Enrollment IDI20120302000546

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

Medicare enrollment records show Peter Naas reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gastroenterology Associates, PA

0.1 mi

Gastroenterology

125 HALTON ROAD, SUITE 200
Greenville, SC 29607

Reassigned Medicare billing, South Carolina enrollment
112 clinicians in this Medicare group

NPI 1487684031 (864) 232-7338

Greenville Health System

0.5 mi

General Acute Care Hospital

175 PATEWOOD DR
Greenville, SC 29615

Reassigned Medicare billing, South Carolina enrollment
735 clinicians in this Medicare group

NPI 1568532513 (864) 797-1000

Ghs Partners In Health, Inc.

0.8 mi

Dermatology

920 WOODRUFF RD
Greenville, SC 29607

Reassigned Medicare billing, South Carolina enrollment
Medicare enrollment name: Prisma Health University Medical Group
3,281 clinicians in this Medicare group

NPI 1235446337 (864) 233-6338

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 16

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.

411 services205 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.

287 services226 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.

151 services150 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.

145 services85 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.

117 services111 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.

95 services73 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.

71 services71 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.

70 services70 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.

62 services61 patients

Dilation of esophagus 43450

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

58 services53 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

41 services24 patients

Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 99439

Chronic Care Management services involve regular check-ins with healthcare professionals to manage two or more chronic conditions. It includes an additional 20 minutes of clinical staff time per month, directed by a healthcare professional, to ensure optimal health management.

37 services21 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.

32 services30 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

18 services18 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.

14 services13 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Spartanburg Medical Center

Acute Care Hospitals · Spartanburg, SC

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number420007

Location101 E Wood StSpartanburg, SC 29303 · Spartanburg County

Emergency services Birthing friendly

Prisma Health Hillcrest Hospital

Acute Care Hospitals · Simpsonville, SC

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420037

Location741 South East Main StreetSimpsonville, SC 29681 · Greenville County

Emergency services

Prisma Health Greenville Memorial Hospital

Acute Care Hospitals · Greenville, SC

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420078

Location701 Grove RoadGreenville, SC 29605 · Greenville County

Birthing friendly

Prisma Health Patewood Hospital

Acute Care Hospitals · Greenville, SC

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420102

Location175 Patewood DriveGreenville, SC 29615 · Greenville County

Birthing friendly

Pelham Medical Center

Acute Care Hospitals · Greer, SC

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number420103

Location250 Westmoreland RoadGreer, SC 29651 · Greenville County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29607 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

$124.04 typical visit price

range $53.57 – $163.84

Typical copayment $31.01 (range $13.39 – $40.96)

Most-billed visit code 99204

Established Patient

$95.12 typical visit price

range $16.96 – $133.52

Typical copayment $23.78 (range $4.24 – $33.38)

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.

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.

J. WILLIAMS HOLT III M.D.

Internal Medicine (Gastroenterology)