DR. GREGARY D MARHEFKA MD
NPI 1649226184
Internal Medicine - Cardiovascular Disease in Philadelphia, PA

Q: What is Gregary Marhefka's NPI number?

The NPI number for Gregary Marhefka is 1649226184. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Q: What is Gregary Marhefka's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Gregary Marhefka was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 26, 2006PECOS EnrolledAccepts Medicare Assignment

925 CHESTNUT ST, MEZZANINE FLOOR, PHILADELPHIA, PA 19107(215) 955-5050(215) 955-7499 Get Directions Write a Review

NPPES record last updated: April 2, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Gregary D Marhefka Md NPPES

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

DR. GREGARY D MARHEFKA MD (NPI 1649226184) is an individual cardiovascular disease provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD423362) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Jefferson Stratford Hospital, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (1998).

NPPES Registry Identity

NPI1649226184

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. GREGARY D MARHEFKACredential: MD

Location Address925 CHESTNUT ST, MEZZANINE FLOORPhiladelphia, PA 19107-4216

Mailing Address925 Chestnut St, MezzaninePhiladelphia, PA 19107-4216

Phone(215) 955-5050

Fax(215) 955-7499

Sole ProprietorNo

Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 1998

Enumeration DateMay 26, 2006

Last NPPES UpdateApril 2, 2015

✔ NPI 1649226184 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in PA · MD423362✔ Licensed in NJ · 25MA07023900

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

925 CHESTNUT ST, Philadelphia, PA 19107

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Other Identifiers 5

Medicare PIN098580PAGPA

Medicare UPINI49657NJ

Medicare PIN101356BDGNJ

Medicaid1018497190002PA

Medicaid7429703NJ

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 and more.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. Gregary D Marhefka 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 ID8022024553

PECOS Enrollment IDI20060221000815, I20060622000067

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

Jefferson University Physicians

0.1 mi

General Practice

33 S. 9TH STREET
Philadelphia, PA 19107

Reassigned Medicare billing, Pennsylvania enrollment
1,739 clinicians in this Medicare group

NPI 1326093675 (215) 955-0000

Jefferson University Physicians Of New Jersey, P.C.

12 mi

Internal Medicine

443 LAUREL OAK RD, SUITE 130
Voorhees, NJ 08043

Reassigned Medicare billing, New Jersey enrollment
Medicare enrollment name: Jefferson University Physicians Of New Jersey PC
186 clinicians in this Medicare group

NPI 1083039200 (856) 741-0122

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 17

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

545 services317 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

291 services87 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.

150 services117 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

110 services110 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

102 services68 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.

88 services81 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.

55 services55 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

45 services45 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

45 services45 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

45 services45 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

21 services20 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.

20 services17 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

18 services18 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

18 services11 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

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.

15 services15 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Jefferson Stratford Hospital

Acute Care Hospitals · Stratford, NJ

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310086

Location18 East Laurel RoadStratford, NJ 08084 · Camden County

Emergency services Birthing friendly

Thomas Jefferson University Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390174

Location111 South 11th StreetPhiladelphia, PA 19107 · Philadelphia County

Emergency services Birthing friendly

Einstein Medical Center Montgomery

Acute Care Hospitals · East Norriton, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390329

Location559 West Germantown PikeEast Norriton, PA 19403 · Montgomery County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19107 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

$74.47 typical visit price

range $19.30 – $147.29

Typical copayment $18.61 (range $4.82 – $36.82)

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.

DR. MATTHEW DECARO M.D.

Internal Medicine (Cardiovascular Disease)

925 CHESTNUT ST, MEZZANINE
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-5050

DR. MANISH SHARMA MD

Internal Medicine (Medical Oncology)

925 CHESTNUT ST, SUITE 320A
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-8874

MS. ELEANOR LYNN VANDERKLOK CRNP

Nurse Practitioner (Adult Health)

925 CHESTNUT ST, SUITE 320A
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-8874

LEANNE MCKEOWN PA-C

Physician Assistant

925 CHESTNUT ST, FIFTH FLOOR
PHILADELPHIA, PA 19107

Philadelphia County (267) 339-3500

WILLIAM KEVIN KELLY DO

Internal Medicine (Medical Oncology)

925 CHESTNUT ST, SUITE 320A
PHILADELPHIA, PA 19107

Philadelphia County (215) 995-8874

DR. MARC R. ROSEN M.D.

Otolaryngology

925 CHESTNUT ST, 6TH FLOOR
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-6760

ANDREW B NEWBERG MD

Nuclear Medicine

925 CHESTNUT ST, SUITE 120
PHILADELPHIA, PA 19107

Philadelphia County (215) 503-3422

DR. HOWARD H. WEITZ M.D.

Internal Medicine (Cardiovascular Disease)

925 CHESTNUT ST, MEZZANINE FLOOR
PHILADELPHIA, PA 19107

Philadelphia County (215) 955-5050

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 Gregary Marhefka's NPI number?

The NPI number for Gregary Marhefka is 1649226184. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Where is Gregary Marhefka located?

Gregary Marhefka practices at 925 Chestnut St Mezzanine Floor, Philadelphia, PA 19107. The listed phone number is (215) 955-5050.

What is Gregary Marhefka's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Gregary Marhefka enrolled in Medicare?

Yes. Gregary Marhefka 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 Gregary Marhefka's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregary Marhefka reassigns Medicare benefits to 2 organizations: Jefferson University Physicians (Philadelphia, PA) and Jefferson University Physicians Of New Jersey, P.C. (Voorhees, NJ). 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 Gregary Marhefka's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregary Marhefka accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan and Oscar Health list Gregary Marhefka 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 Gregary Marhefka affiliated with any hospitals?

According to CMS data, Gregary Marhefka is affiliated with Jefferson Stratford Hospital, Thomas Jefferson University Hospital and Einstein Medical Center Montgomery.

When was this NPI record last updated?

The NPPES record for Gregary Marhefka was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.