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Internal Medicine Providers in Hackettstown, NJ

Browse 26 Internal Medicine providers listed in NPPES with a practice address in Hackettstown, New Jersey.

26 Healthcare Providers

How Hackettstown compares with the U.S.

Hackettstown has 256 clinicians in Internal Medicine per 100,000 residents, 5.8 times the U.S. rate of 44.

That is 26 active clinicians in Internal Medicine with a practice address in Hackettstown, for a population of 10,140.

The New Jersey rate is 50 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine in Hackettstown listed in the CMS Medicare file (20 of 20) accept Medicare assignment. That is similar to the New Jersey share of 96%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

35% of clinicians in Internal Medicine in Hackettstown listed in the CMS Medicare file (7 of 20) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the New Jersey share of 40%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Hackettstown, NJ

Source: CMS PECOS
PECOS Enrolled Specialists 21 In Hackettstown, NJ
Part B Lab & Imaging Eligible 21 Diagnostic Referrals
DME Ordering Eligible 21 Durable Medical Equipment
Home Health Agency Referrals 21 HHA Ordering Eligible
Showing 1โ€“20 of 26 providers
With recent CMS data first, then Aโ€“Z

Dr. Antonella Auciello , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
653 Willow Grove St, Suite 2100, Hackettstown, NJ 078401732
Phone: 9084411352
NPI Identifier 1629064043
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Dr. Jimmy Chang , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
657 Willow Grove St, Suite 401, Hackettstown, NJ 078401868
Phone: 9088507800
NPI Identifier 1629082300
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Dr. Gary John Devine , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
651 Willow Grove St, Hackettstown, NJ 078401799
Phone: 9084411161
NPI Identifier 1063943082
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Dr. Devi P Gollapudi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
47 Route 46, Hackettstown, NJ 078402642
Phone: 9088528750
NPI Identifier 1841248036
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Dr. Keri Lynn Ingrassia-Squiers , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
Hastings Square Plaza #5, Schooleys Mountain Road, Hackettstown, NJ 07840
Phone: 9089790050
NPI Identifier 1467465203
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Dr. Uldis J Jansons , MD

Internal Medicine

Active NPI Status
115 Church St, Hackettstown, NJ 078402205
Phone: 9088500150
NPI Identifier 1255312054
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Dr. Sanjay Kavathia , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
616 Willow Grove St, Unit 1a, Hackettstown, NJ 078401779
Phone: 9088528484
NPI Identifier 1124078142
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Dr. Sarosh Khan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
651 Willow Grove St, Hackettstown, NJ 078401799
Phone: 9084411161
NPI Identifier 1366799199
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Dr. Ahmad F Maatouk , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
651 Willow Grove St, Hackettstown, NJ 078401799
Phone: 9084411161
NPI Identifier 1790938066
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Dr. Matilda Sylvia Mason , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
651 Willow Grove St, Hackettstown, NJ 078401799
Phone: 9084411161
NPI Identifier 1205141959
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Dr. Jeffrey Merkle , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
254b Mountain Ave, Suite 304, Hackettstown, NJ 078402413
Phone: 9088526400
NPI Identifier 1295721165
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Dr. Nkemamaka Chinenyenwa Okpala , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
433 Sand Shore Rd, Hackettstown, NJ 078405504
Phone: 8622542299
NPI Identifier 1992062749
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Dr. Sidrah Rafiq , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
651 Willow Grove St, Hackettstown, NJ 078401799
Phone: 9084411161
NPI Identifier 1043665334
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Dr. Syed Mohsin Raza , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
117 Seber Rd, Doctors Park 2b, Hackettstown, NJ 078401722
Phone: 9086840684
NPI Identifier 1194704585
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Dr. Carla Rodriguez , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
108 Bilby Rd Ste 104, Hackettstown, NJ 078404174
Phone: 9084411352
NPI Identifier 1376036483
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Roger Saez

Internal Medicine

Active NPI Status Accepts Medicare Assignment
651 Willow Grove St, Hackettstown, NJ 078401799
Phone: 9084411161
NPI Identifier 1598118010
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Vineet Sandhu

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
137 Mountain Ave, Hackettstown, NJ 078402390
Phone: 9088521887
NPI Identifier 1891083127
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Dr. Sandira V Segaram , MD, FACP

Internal Medicine

Active NPI Status Accepts Medicare Assignment
653 Willow Grove St, Suite 1600, Hackettstown, NJ 078401732
Phone: 9088132888
NPI Identifier 1508813346
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Dr. Irina Stojanovska , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
108 Bilby Rd Ste 104, Hackettstown, NJ 078404174
Phone: 9084411352
NPI Identifier 1205235231
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Dr. Eduard C Tapliga , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
657 Willow Grove St, Hackettstown, NJ 078401713
Phone: 9088525100
NPI Identifier 1356302483
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Frequently Asked Questions about Internal Medicine in Hackettstown

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the New Jersey licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.