DR. GREGORY DADEKIAN MD
NPI 1902082449
Internal Medicine in Lebanon, NH

Q: What is Gregory Dadekian's NPI number?

The NPI number for Gregory Dadekian is 1902082449. It was assigned to this individual provider in the NPPES registry on January 15, 2008.

Q: What is Gregory Dadekian's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Dadekian was last updated on December 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 January 15, 2008PECOS EnrolledAccepts Medicare Assignment

76.01/100

CMS Quality Rating

1 MEDICAL CENTER DR, DARTMOUTH HITCHCOCK - CARDIOLOGY, LEBANON, NH 03756(603) 650-5861(603) 640-1228 Get Directions Write a Review

NPPES record last updated: December 10, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 10, 2025, Aug 15, 2016 (2 updates tracked since 2016).

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About Dr. Gregory Dadekian Md NPPES

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

DR. GREGORY DADEKIAN MD (NPI 1902082449) is an individual internal medicine provider in Lebanon, New Hampshire, licensed in New Hampshire (16065) and active in the NPI registry since January 2008. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and is a graduate of Warren Alpert Medical School Of Brown University (2006).

NPPES Registry Identity

NPI1902082449

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. GREGORY DADEKIANCredential: MD

Location Address1 MEDICAL CENTER DR, DARTMOUTH HITCHCOCK - CARDIOLOGYLebanon, NH 03756-1000

Mailing Address1 Medical Center Dr, Dartmouth Hitchcock - CardiologyLebanon, NH 03756-1000 · (603) 650-5861

Phone(603) 650-5861

Fax(603) 640-1228

Sole ProprietorNo

Medical School CMSWarren Alpert Medical School Of Brown UniversityGraduated 2006

Enumeration DateJanuary 15, 2008

Last NPPES UpdateDecember 10, 20252 updates tracked since enumeration

NPPES CertifiedDecember 10, 2025

✔ NPI 1902082449 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in NH · 16065

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 16065 (NH)

1 MEDICAL CENTER DR, Lebanon, NH 03756

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield and more.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. Gregory Dadekian 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 ID7719126994

PECOS Enrollment IDI20160705000497

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 22

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.

674 services576 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.

634 services629 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.

162 services135 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

154 services152 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.

142 services140 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.

127 services70 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.

98 services96 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.

88 services88 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.

88 services88 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.

83 services43 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.

50 services48 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.

44 services40 patients

Ultrasound of heart during rest, exercise and/or drug-induced stress with report 93350

This procedure involves using ultrasound imaging to view your heart at rest, during exercise, and/or under drug-induced stress. It helps assess how well your heart responds to exertion. A report of the findings is provided after the test.

37 services37 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.

36 services33 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

34 services34 patients

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

32 services29 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

29 services29 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

28 services28 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.

24 services24 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

16 services16 patients

Ultrasound of heart with probe in esophagus during surgery on heart or great blood vessels with report 93355

This procedure, known as a transesophageal echocardiogram, involves placing a probe in your esophagus to capture detailed images of your heart during surgery. It helps surgeons monitor heart function and guide treatment. A report will follow.

15 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Mary Hitchcock Memorial Hospital

Acute Care Hospitals · Lebanon, NH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number300003

Location1 Medical Center DriveLebanon, NH 03756 · Grafton County

Emergency services Birthing friendly

Cheshire Medical Center

Acute Care Hospitals · Keene, NH

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number300019

Location580 Court StreetKeene, NH 03431 · Cheshire County

Emergency services Birthing friendly

Alice Peck Day Memorial Hospital

Critical Access Hospitals · Lebanon, NH

OwnershipVoluntary non-profit - Private

CMS Certification Number301305

Location10 Alice Peck Day DriveLebanon, NH 03766 · Grafton County

Emergency services

Huggins Hospital

Critical Access Hospitals · Wolfeboro, NH

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number301312

Location240 South Main StreetWolfeboro, NH 03894 · Carroll County

Emergency services

Mt Ascutney Hospital

Critical Access Hospitals · Windsor, VT

OwnershipVoluntary non-profit - Private

CMS Certification Number471302

Location289 County RoadWindsor, VT 05089 · Windsor County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03756 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

$132.09 typical visit price

range $57.75 – $174.26

Typical copayment $33.02 (range $14.43 – $43.56)

Most-billed visit code 99204

Established Patient

$101.54 typical visit price

range $18.70 – $142.15

Typical copayment $25.38 (range $4.67 – $35.53)

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.

76.01/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

65.31

Promoting Interoperability

100

Improvement Activities

Cost

54.74

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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.

MRS. JANICE M BRENNAN APRN

Nurse Practitioner (Family)

1 MEDICAL CENTER DR, DHMC DEPARTMENT OF OCCUPATION MEDICINE
LEBANON, NH 03756

Grafton County (603) 560-5000

MS. SHELLEY GRACE BENSON R.PH.

Pharmacist (Oncology)

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (603) 650-5417

ELIAS LOUKAS M.D.

Internal Medicine

1 MEDICAL CENTER DR, DHMC SECTION OF HOSPITAL MEDICINE
LEBANON, NH 03756

Grafton County (603) 650-8380

SARAH S SEO MD

Otolaryngology

1 MEDICAL CENTER DR, OTOLARYNGOLOGY
LEBANON, NH 03756

Grafton County (603) 650-8123

DR. SRINIVAS J. IVATURY MD

Colon & Rectal Surgery

1 MEDICAL CENTER DR, COLON & RECTAL SURGERY DEPARTMENT
LEBANON, NH 03756

Grafton County (603) 650-8113

TIMOTHY EARLEY D.O.

Student in an Organized Health Care Education/Training Program

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (201) 694-0663

HANNAH ELIZABETH FOOTE BENSIMHON M.D.

Internal Medicine (Cardiovascular Disease)

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (603) 650-5000

EMILE JOSEPH HASAN M.D.

Student in an Organized Health Care Education/Training Program

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (603) 650-5000

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 Dadekian's NPI number?

The NPI number for Gregory Dadekian is 1902082449. It was assigned to this individual provider in the NPPES registry on January 15, 2008.

Where is Gregory Dadekian located?

Gregory Dadekian practices at 1 Medical Center Dr Dartmouth Hitchcock - Cardiology, Lebanon, NH 03756. The listed phone number is (603) 650-5861.

What is Gregory Dadekian's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gregory Dadekian enrolled in Medicare?

Yes. Gregory Dadekian 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 Gregory Dadekian accept?

Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Gregory Dadekian 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 Gregory Dadekian affiliated with any hospitals?

According to CMS data, Gregory Dadekian is affiliated with Mary Hitchcock Memorial Hospital, Cheshire Medical Center, Alice Peck Day Memorial Hospital, Huggins Hospital and Mt Ascutney Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Dadekian was last updated on December 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.