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DR. MARK ANDREW GROMSKI MD
NPI 1255625679
Internal Medicine - Gastroenterology in Indianapolis, IN

Active since June 02, 2011PECOS EnrolledAccepts Medicare Assignment
1701 N SENATE BLVD, INDIANAPOLIS, IN 46202(888) 484-3258 Get Directions Write a Review

NPPES record last updated: March 12, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 12, 2025, Jan 25, 2021, Jan 18, 2021 (3 updates tracked since 2021).

About Dr. Mark Andrew Gromski Md NPPES

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

DR. MARK ANDREW GROMSKI MD (NPI 1255625679) is an individual gastroenterology provider in Indianapolis, Indiana, licensed in Indiana (01073629A) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Indiana University Health, and maintains a secondary practice location in Indianapolis.

NPPES Registry Identity

NPI1255625679
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MARK ANDREW GROMSKICredential: MD
Location Address1701 N SENATE BLVDIndianapolis, IN 46202-1239
Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959 · (877) 668-5621
Phone(888) 484-3258
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateJune 2, 2011
Last NPPES UpdateMarch 12, 20253 updates tracked since enumeration
NPPES CertifiedMarch 12, 2025
✔ NPI 1255625679 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in IN · 01073629A
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 248129 (MA)
1701 N SENATE BLVD, Indianapolis, IN 46202
Open in Google Maps ↗

Secondary Practice Location 1

Location 1550 University Blvd Ste 1634Indianapolis, IN 46202-5149 · Phone (317) 944-0980 · Fax (317) 968-1265

Other Identifiers 1

Medicaid300004305IN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

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. Mark Andrew Gromski Md 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 ID9133343486
PECOS Enrollment IDI20170608000919
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 9

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.

Review by radiologist of image from tube placement into bile duct using an endoscope 74328
This procedure involves a specialist, called a radiologist, examining an image taken during a tube placement into your bile duct. The tube is inserted with the help of a tool called an endoscope. This allows the doctor to check for any issues or abnormalities in your bile duct.
49 services37 patients
Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope 43238
An ultrasound guided needle aspiration or biopsy of the esophagus involves using a flexible tube with a camera (endoscope) to view your esophagus. An ultrasound device on the endoscope helps to guide a needle to take a small tissue sample for testing. This is a safe, minimally invasive procedure.
43 services41 patients
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.
43 services28 patients
Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth 43237
This procedure involves a flexible tube with a camera and ultrasound device, inserted through the mouth to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like inflammation, tumors, or other abnormalities.
40 services40 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.
40 services39 patients
Removal of stone or debris from bile or pancreatic duct using a flexible endoscope 43264
This procedure, called an endoscopic retrograde cholangiopancreatography (ERCP), involves using a flexible tube with a camera (endoscope) to locate and remove stones or debris from your bile or pancreatic duct. It's a non-surgical method to clear the ducts, enhancing your digestive health.
37 services26 patients

Hospital Affiliations CMS Care Compare

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

Indiana University Health

Acute Care Hospitals · Indianapolis, IN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150056
Location1701 N Senate BlvdIndianapolis, IN 46202 · Marion County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46202 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
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
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.

THOMAS M DONAHUE MD
Anesthesiology
1701 N SENATE BLVD
INDIANAPOLIS, IN 46202
Marion County (317) 577-4200
DR. GINA MARIE DIANTONIO SWARTZEL M.D.
Emergency Medicine
1701 N SENATE BLVD, B401
INDIANAPOLIS, IN 46202
Marion County (317) 962-5975
NASER A KAFEEL DO
Internal Medicine
1701 N SENATE BLVD
INDIANAPOLIS, IN 46202
Marion County (317) 962-8776
ZACHARY JARRETT DO
Internal Medicine (Critical Care Medicine)
1701 N SENATE BLVD
INDIANAPOLIS, IN 46202
Marion County (317) 962-5820
BARBRA A BACHMEIER NP
Nurse Practitioner (Family)
1701 N SENATE BLVD, RM AG 001
INDIANAPOLIS, IN 46202
Marion County (317) 962-3886
MARK H HOYER MD
Pediatrics (Pediatric Cardiology)
1701 N SENATE BLVD
INDIANAPOLIS, IN 46202
Marion County (317) 678-3900
SHALINI K MANCHANDA MD
Internal Medicine (Sleep Medicine)
1701 N SENATE BLVD
INDIANAPOLIS, IN 46202
Marion County (888) 484-3258
SEAN DAVID GUSSICK MD
Radiology (Diagnostic Radiology)
1701 N SENATE BLVD, RADIOLOGY DEPT
INDIANAPOLIS, IN 46202
Marion County (317) 962-5740

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 Mark Gromski's NPI number?

The NPI number for Mark Gromski is 1255625679. It was assigned to this individual provider in the NPPES registry on June 2, 2011.

Where is Mark Gromski located?

Mark Gromski practices at 1701 N Senate Blvd, Indianapolis, IN 46202. The listed phone number is (888) 484-3258.

What is Mark Gromski's specialty?

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

Is Mark Gromski enrolled in Medicare?

Yes. Mark Gromski 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.

What insurance does Mark Gromski accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 1 other insurer list Mark Gromski 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.

Is Mark Gromski affiliated with any hospitals?

According to CMS data, Mark Gromski is affiliated with Indiana University Health.

When was this NPI record last updated?

The NPPES record for Mark Gromski was last updated on March 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.