GERARD MULLIN M.D.
NPI 1891746996
Internal Medicine - Gastroenterology in Baltimore, MD

Q: What is Gerard Mullin's NPI number?

The NPI number for Gerard Mullin is 1891746996. It was assigned to this individual provider in the NPPES registry on May 13, 2006.

Q: What is Gerard Mullin'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 Gerard Mullin was last updated on February 13, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 May 13, 2006PECOS Enrolled

600 N WOLFE ST, BALTIMORE, MD 21287(410) 955-4166 Get Directions Write a Review

NPPES record last updated: February 13, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Gerard Mullin M.d. NPPES

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

GERARD MULLIN M.D. (NPI 1891746996) is an individual gastroenterology provider in Baltimore, Maryland, licensed in Maryland (D37257) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1891746996

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameGERARD MULLINCredential: M.D.

Location Address600 N WOLFE STBaltimore, MD 21287-0005

Mailing AddressPo Box 64264Baltimore, MD 21264-4264 · (410) 616-7350

Phone(410) 955-4166

Sole ProprietorNo

Medical School CMSOtherGraduated 1985

Enumeration DateMay 13, 2006

Last NPPES UpdateFebruary 13, 2013

✔ NPI 1891746996 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 MD · D37257

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.

600 N WOLFE ST, Baltimore, MD 21287

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Other Identifiers 3

Medicaid543361400MD

Medicare PINKR68M111MD

Medicare UPINE46926MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gerard Mullin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9638100506

PECOS Enrollment IDI20050830001001

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 13

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.

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 services80 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.

47 services47 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.

40 services40 patients

Measurement of hydrogen in breath to test for stomach and bowel symptoms 91065

This test involves breathing into a bag to measure hydrogen levels in your breath. High levels can indicate issues with food digestion or absorption in your stomach or intestines. It's non-invasive, painless, and helps diagnose certain gastrointestinal conditions.

38 services37 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.

34 services34 patients

Imaging of digestive tract done from the inside of the digestive tract 91110

This procedure, known as an endoscopy, involves a small camera being passed into the digestive tract. It helps doctors to see the inside of your digestive system in detail. This can aid in diagnosing conditions or planning treatments. It's generally safe and can provide valuable information.

33 services32 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.

30 services30 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.

30 services30 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.

17 services15 patients

Imaging of digestive tract done from the inside of the digestive tract 91110

15 services15 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.

14 services14 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 services14 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.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210009

Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County

Emergency services Birthing friendly

Johns Hopkins Bayview Medical Center

Acute Care Hospitals · Baltimore, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210029

Location4940 Eastern AvenueBaltimore, MD 21224 · Baltimore City County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21287 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

$139.05 typical visit price

range $60.73 – $183.44

Typical copayment $34.76 (range $15.18 – $45.86)

Most-billed visit code 99204

Established Patient

$106.59 typical visit price

range $19.60 – $149.17

Typical copayment $26.64 (range $4.90 – $37.29)

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.

PAMELA KIMZEY DONOHUE SCD, PA-C

Physician Assistant (Medical)

600 N WOLFE ST, NELSON 2-133
BALTIMORE, MD 21287

Baltimore City (410) 955-5232

MR. CHRISTOPHER DAVID SCHRIEBER M.S., PA-C

Physician Assistant

600 N WOLFE ST, MARBURG B-186
BALTIMORE, MD 21287

Baltimore City (410) 955-8708

DR. SABRINA CHRISTINE SOPHA M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-3580

SANDRA KING D.H.

Dental Hygienist

600 N WOLFE ST, BLALOCK 266
BALTIMORE, MD 21287

Baltimore City (410) 955-6662

THERESA J RUDDY C.P.N.P., CRNP

Nurse Practitioner (Acute Care)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5260

DR. SUMAN PAUL M.B.B.S, PHD

Internal Medicine (Medical Oncology)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

MS. SARAH CATHERINE COLLICA

Psychiatry & Neurology (Psychiatry)

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (443) 287-4701

JEFF S EHRESMAN

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

KAITLYN MARIE FRAZIER MD

Otolaryngology

600 N WOLFE ST, JOHNS HOPKINS HOSPITAL, DEPT OF OTOLARYNGOLOGY
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

CAROLINE FRANCES PLOTT MS

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-3080

BRIAN TRAN PHARMD

Pharmacist (Ambulatory Care)

600 N WOLFE ST, CARNEGIE BLDG ROOM 180
BALTIMORE, MD 21287

Baltimore City (678) 879-3126

EMAD MUHAMMED ALI IBRAHIM

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

AARON DOBBINS

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-9790

ETHAN THIO

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

ALEXANDRA JADE DAVIS

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

ARIE CALEB VAN WIEREN

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

MS. ANA C ZEGHIBE

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

MURPHY KENNY

Student in an Organized Health Care Education/Training Program

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-5000

DR. PRADEEP Y RAMULU MD

Ophthalmology

600 N WOLFE ST
BALTIMORE, MD 21287

Baltimore City (410) 955-6052

LEISHA EMENS

Internal Medicine (Medical Oncology)

600 N WOLFE ST, SUITE 4628
BALTIMORE, MD 21287

Baltimore City (410) 955-8964

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 Gerard Mullin's NPI number?

The NPI number for Gerard Mullin is 1891746996. It was assigned to this individual provider in the NPPES registry on May 13, 2006.

Where is Gerard Mullin located?

Gerard Mullin practices at 600 N Wolfe St, Baltimore, MD 21287. The listed phone number is (410) 955-4166.

What is Gerard Mullin's specialty?

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

Is Gerard Mullin enrolled in Medicare?

Yes. Gerard Mullin is registered in the Medicare PECOS enrollment system.

Is Gerard Mullin affiliated with any hospitals?

According to CMS data, Gerard Mullin is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.

When was this NPI record last updated?

The NPPES record for Gerard Mullin was last updated on February 13, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.