DR. NORMAN M. CALLAHAN D.O.
NPI 1851367783
Internal Medicine - Gastroenterology in Malvern, PA

Q: What is Norman Callahan's NPI number?

The NPI number for Norman Callahan is 1851367783. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Q: What is Norman Callahan'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 Norman Callahan was last updated on August 5, 2009. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since February 28, 2006PECOS EnrolledAccepts Medicare Assignment

325 CENTRAL AVE, 2ND FLOOR, MALVERN, PA 19355(610) 644-6755(610) 647-2063 Get Directions Write a Review

NPPES record last updated: August 5, 2009. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Norman M. Callahan D.o. NPPES

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

DR. NORMAN M. CALLAHAN D.O. (NPI 1851367783) is an individual gastroenterology provider in Malvern, Pennsylvania, licensed in Pennsylvania (OS007658-L) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Philadelphia College Of Osteopathic Medicine (1991).

NPPES Registry Identity

NPI1851367783

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. NORMAN M. CALLAHANCredential: D.O.

Location Address325 CENTRAL AVE, 2ND FLOORMalvern, PA 19355-3265

Mailing AddressPo Box 350Sellersville, PA 18960-0350 · (215) 723-2333 · Fax (215) 723-9112

Phone(610) 644-6755

Fax(610) 647-2063

Sole ProprietorNo

Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 1991

Enumeration DateFebruary 28, 2006

Last NPPES UpdateAugust 5, 2009

✔ NPI 1851367783 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 PA · OS007658-L

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.

325 CENTRAL AVE, Malvern, PA 19355

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Other Identifiers 4

Medicaid1722646PA

Medicare UPING44915PA

Medicare PIN022638JH4PA

Other100013312PA · Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.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. Norman M. Callahan D.o. 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 ID1355394289

PECOS Enrollment IDI20100427000074

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 18

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.

Injection, vedolizumab, intravenous, 1 mg J3380

Vedolizumab is a medication given via injection. It's used to treat certain bowel conditions (such as Crohn's disease, ulcerative colitis) by reducing inflammation. It works by blocking a certain protein that causes this inflammation.

4,800 services11 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.

146 services146 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.

97 services84 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.

96 services92 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.

90 services90 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.

78 services78 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

75 services62 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.

72 services72 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.

52 services40 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.

51 services47 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

51 services51 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.

51 services51 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.

33 services33 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.

26 services26 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.

25 services25 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.

16 services16 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

16 services11 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.

14 services14 patients

Hospital Affiliations CMS Care Compare 5

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

Hospital Of Univ Of Pennsylvania

Acute Care Hospitals · Philadelphia, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390111

Location34th & Spruce StsPhiladelphia, PA 19104 · Philadelphia County

Emergency services Birthing friendly

Jefferson Health- Northeast

Acute Care Hospitals · Philadelphia, PA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390115

Location10800 Knights RoadPhiladelphia, PA 19114 · Philadelphia County

Emergency services

Bryn Mawr Hospital

Acute Care Hospitals · Bryn Mawr, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390139

Location130 South Bryn Mawr AveBryn Mawr, PA 19010 · Montgomery County

Emergency services Birthing friendly

Paoli Hospital

Acute Care Hospitals · Paoli, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390153

Location255 West Lancaster AvenuePaoli, PA 19301 · Chester County

Emergency services Birthing friendly

Main Line Hospital Lankenau

Acute Care Hospitals · Wynnewood, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390195

Location100 Lancaster AveWynnewood, PA 19096 · Montgomery County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19355 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

$137.17 typical visit price

range $59.88 – $180.99

Typical copayment $34.29 (range $14.97 – $45.24)

Most-billed visit code 99204

Established Patient

$105.21 typical visit price

range $19.30 – $147.29

Typical copayment $26.30 (range $4.82 – $36.82)

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.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

99%170 patients4/55-star benchmark: 100%

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

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

86%286 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.

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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.

LISA BETH MEEDER CRNA

Nurse Anesthetist, Certified Registered

325 CENTRAL AVE, SUITE 200
MALVERN, PA 19355

Chester County (610) 644-6755

PAOLI PSYCHIATRIC ASSOCIATES

Psychiatry & Neurology (Psychiatry)

325 CENTRAL AVE, SUITE 102
MALVERN, PA 19355

Chester County (610) 296-0142

MICHAEL B WOLFSON M.D.

Internal Medicine (Gastroenterology)

325 CENTRAL AVE, 2ND FLOOR
MALVERN, PA 19355

Chester County (610) 644-6755

RUPAL KOTHARI D.O.

Internal Medicine (Gastroenterology)

325 CENTRAL AVE, 2ND FLOOR
MALVERN, PA 19355

Chester County (610) 644-6755

MAURA MACDONALD BARR DO

Internal Medicine (Gastroenterology)

325 CENTRAL AVE, SUITE 200
MALVERN, PA 19355

Chester County (610) 644-6755

DR. RICHARD FREDERICK KOUP D.M.D.

Dentist (General Practice)

325 CENTRAL AVE, SUITE 101
MALVERN, PA 19355

Chester County (610) 644-0408

ANIL K SHARMA MD

Internal Medicine (Gastroenterology)

325 CENTRAL AVE, 2ND FLOOR
MALVERN, PA 19355

Chester County (610) 644-6755

TAKAHIRO IGNACIO NAKAMURA MD

Internal Medicine (Gastroenterology)

325 CENTRAL AVE
MALVERN, PA 19355

Chester County (610) 234-7900

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 Norman Callahan's NPI number?

The NPI number for Norman Callahan is 1851367783. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Where is Norman Callahan located?

Norman Callahan practices at 325 Central Ave 2nd Floor, Malvern, PA 19355. The listed phone number is (610) 644-6755.

What is Norman Callahan's specialty?

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

Is Norman Callahan enrolled in Medicare?

Yes. Norman Callahan 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 Norman Callahan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Norman Callahan 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 Norman Callahan affiliated with any hospitals?

According to CMS data, Norman Callahan is affiliated with Hospital Of Univ Of Pennsylvania, Jefferson Health- Northeast, Bryn Mawr Hospital, Paoli Hospital and Main Line Hospital Lankenau.

When was this NPI record last updated?

The NPPES record for Norman Callahan was last updated on August 5, 2009. NPI Profile syncs with the weekly NPPES data releases published by CMS.