GREGORY STEINER M.D.
NPI 1841557188
Surgery in Baltimore, MD

Q: What is Gregory Steiner's NPI number?

The NPI number for Gregory Steiner is 1841557188. It was assigned to this individual provider in the NPPES registry on April 11, 2012.

Q: What is Gregory Steiner's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Steiner was last updated on July 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 April 11, 2012PECOS EnrolledAccepts Medicare Assignment

201 E UNIVERSITY PKWY, DEPARTMENT OF GENERAL SURGERY, BALTIMORE, MD 21218(410) 554-2782 Get Directions Write a Review

NPPES record last updated: July 11, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 11, 2025, Oct 8, 2019 (2 updates tracked since 2019).

On this page

About Gregory Steiner M.d. NPPES

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

GREGORY STEINER M.D. (NPI 1841557188) is an individual surgery provider in Baltimore, Maryland, licensed in Missouri (2019022885) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of West Virginia University School Of Medicine (2012).

NPPES Registry Identity

NPI1841557188

Entity TypeIndividualMale

Primary Taxonomy208600000X

Provider Legal NameGREGORY STEINERCredential: M.D.

Location Address201 E UNIVERSITY PKWY, DEPARTMENT OF GENERAL SURGERYBaltimore, MD 21218-2829

Mailing Address201 E University Pkwy, Department Of General SurgeryBaltimore, MD 21218-2829 · (410) 554-2782

Phone(410) 554-2782

Sole ProprietorYes

Medical School CMSWest Virginia University School Of MedicineGraduated 2012

Enumeration DateApril 11, 2012

Last NPPES UpdateJuly 11, 20252 updates tracked since enumeration

✔ NPI 1841557188 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in MO · 2019022885

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

201 E UNIVERSITY PKWY, Baltimore, MD 21218

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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

Gregory Steiner 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 ID4183969207

PECOS Enrollment IDI20250606002499

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 Gregory Steiner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Pittsburgh Physicians

186 mi

Internal Medicine

3436 WILLIAM PENN HWY, SUITE 166
Pittsburgh, PA 15235

Reassigned Medicare billing, Pennsylvania enrollment
7,114 clinicians in this Medicare group

NPI 1407985674 (412) 823-6222

Mercy Clinic Surgical Specialists, LLC

777 mi

Vascular Surgery

851 E 5TH ST, SUITE 108
Washington, MO 63090

Reassigned Medicare billing, Missouri enrollment
168 clinicians in this Medicare group

NPI 1043530538 (636) 861-7870

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 26

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.

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

192 services183 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.

177 services149 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

108 services105 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

101 services98 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

70 services68 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

Ultrasound of both sides of head and neck blood flow 93880

53 services52 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

51 services49 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

41 services34 patients

Ultrasound of one leg arteries or artery grafts 93926

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

40 services37 patients

Complete ultrasound study of arm and leg arteries 93923

30 services29 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

30 services30 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

29 services27 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

28 services28 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

26 services26 patients

Ultrasound of hemodialysis access 93990

An ultrasound of hemodialysis access is a non-invasive procedure that uses sound waves to create images of your dialysis access site. It helps monitor the access site's health and detect any potential issues like blockages or narrowing.

26 services23 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.

26 services26 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

22 services22 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.

20 services19 patients

Review by radiologist of abdominal aorta image 75625

This is a procedure where a radiologist, a doctor specialized in medical imaging, examines an image of your abdominal aorta. The abdominal aorta is the large blood vessel that carries blood to your lower body. The radiologist checks for any abnormalities to ensure your overall vascular health.

18 services18 patients

Ultrasound of aorta, vena cava, groin vessels or bypass grafts 93979

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps doctors check for issues like blockages or enlargements. It's non-invasive and painless.

17 services16 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

17 services16 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

14 services12 patients

Insertion of tunneled central venous tube for infusion (5 years or older) 36558

The insertion of a tunneled central venous tube is a procedure where a thin, flexible tube is placed into a large vein, usually in the neck or chest. This tube allows healthcare providers to give medications, fluids, or nutrients directly into your bloodstream over a longer period.

13 services11 patients

Insertion of tube into abdominal, pelvic, or leg artery, initial second order branch 36246

This procedure involves the placement of a tube into an artery in your abdomen, pelvis, or leg. The tube is inserted into a secondary branch of the main artery. This helps doctors access the artery to diagnose or treat certain conditions.

12 services12 patients

Review by radiologist of arm or leg artery image 75710

This procedure involves a radiologist examining images of your arm or leg arteries. These images are obtained through a non-invasive method, like an ultrasound or CT scan. The radiologist reviews these images to identify any abnormalities, such as blockages or narrowing, which can affect blood flow.

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.

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260020

Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County

Emergency services Birthing friendly

Mercy Hospital Jefferson

Acute Care Hospitals · Festus, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260023

Location1400 Us Highway 61Festus, MO 63028 · Jefferson County

Emergency services

Upmc Mercy

Acute Care Hospitals · Pittsburgh, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390028

Location1400 Locust StreetPittsburgh, PA 15219 · Allegheny County

Emergency services

Magee Womens Hospital Of Upmc Health System

Acute Care Hospitals · Pittsburgh, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number390114

Location300 Halket StreetPittsburgh, PA 15213 · Allegheny County

Emergency services Birthing friendly

Upmc Presbyterian Shadyside

Acute Care Hospitals · Pittsburgh, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390164

Location200 Lothrop StreetPittsburgh, PA 15213 · Allegheny County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21218 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

$94.08 typical visit price

range $60.73 – $183.44

Typical copayment $23.52 (range $15.18 – $45.86)

Most-billed visit code 99203

Established Patient

$75.47 typical visit price

range $19.60 – $149.17

Typical copayment $18.86 (range $4.90 – $37.29)

Most-billed visit code 99213

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.

RONAK K PATEL M.D.

Internal Medicine

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2000

MRS. LINDSAY NICOLE ROYAL BUSSEY CRNP

Nurse Practitioner (Family)

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (855) 633-0199

ISHA SHARAN MD

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2284

DR. MIRIAM L COHEN M.D.

Internal Medicine (Cardiovascular Disease)

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2000

TAYYAB AHSAN TANVIR MBBS

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2284

DR. CALVIN THOMAS WILLIAMS JR. M.D. / PH.D

Internal Medicine (Infectious Disease)

201 E UNIVERSITY PKWY, DEPT OF MEDICINE MEDSTAR UNION MEMORIAL HOSPITAL
BALTIMORE, MD 21218

Baltimore City (443) 474-9911

DAMIEN I SEQUEIRA M.D.

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY, DEPT. OF SURGERY
BALTIMORE, MD 21218

Baltimore City (410) 554-2782

DAVID AARON WEINER M.D.

Orthopaedic Surgery

201 E UNIVERSITY PKWY, DEPARTMENT OF ORTHOPAEDIC SURGERY
BALTIMORE, MD 21218

Baltimore City (410) 554-2270

EKTA MANTRI M.D

Internal Medicine

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2000

MRS. MICHELE LINA MILLFORD OTR/L

Occupational Therapist

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2000

DR. KWABENA NANA ACHIAW DANKWA MD

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2284

QUEENETH CHIDERA EDWARDS

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2284

DR. ZEESHAN ANWAR M.D.

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY, INTERNAL MEDICINE
BALTIMORE, MD 21218

Baltimore City (410) 554-2284

AMY GONZALEZ CRNA

Nurse Anesthetist, Certified Registered

201 E UNIVERSITY PKWY, 33RD STREET PROF BLDG, #226
BALTIMORE, MD 21218

Baltimore City (410) 554-2651

DR. MATTEO FABBRI MD, MS

Internal Medicine (Advanced Heart Failure and Transplant Cardiology)

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (703) 776-4001

DR. DARYN KEITH NORWOOD PHARM.D.

Pharmacist (Geriatric)

201 E UNIVERSITY PKWY, PHARMACY DEPARTMENT
BALTIMORE, MD 21218

Baltimore City (410) 554-2769

DR. ANGELIKI FILIPPATOU MD

Psychiatry & Neurology (Neurology)

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2284

DR. KENNETH STEVEN ROWE MD

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2000

MORGAN SISK

Student in an Organized Health Care Education/Training Program

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 560-3480

ILANA RAE BAIAMONTE

Physical Therapist

201 E UNIVERSITY PKWY
BALTIMORE, MD 21218

Baltimore City (410) 554-2000

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 Gregory Steiner's NPI number?

The NPI number for Gregory Steiner is 1841557188. It was assigned to this individual provider in the NPPES registry on April 11, 2012.

Where is Gregory Steiner located?

Gregory Steiner practices at 201 E University Pkwy Department Of General Surgery, Baltimore, MD 21218. The listed phone number is (410) 554-2782.

What is Gregory Steiner's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Gregory Steiner enrolled in Medicare?

Yes. Gregory Steiner 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 Gregory Steiner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Steiner reassigns Medicare benefits to 2 organizations: University Of Pittsburgh Physicians (Pittsburgh, PA) and Mercy Clinic Surgical Specialists, LLC (Washington, MO). 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 Gregory Steiner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gregory Steiner affiliated with any hospitals?

According to CMS data, Gregory Steiner is affiliated with Mercy Hospital St Louis, Mercy Hospital Jefferson, Upmc Mercy, Magee Womens Hospital Of Upmc Health System and Upmc Presbyterian Shadyside.

When was this NPI record last updated?

The NPPES record for Gregory Steiner was last updated on July 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.