STEPHEN M GEMMETT MD
NPI 1518928316
Surgery - Vascular Surgery in Dover, NH

Q: What is Stephen Gemmett's NPI number?

The NPI number for Stephen Gemmett is 1518928316. It was assigned to this individual provider in the NPPES registry on March 31, 2006.

Q: What is Stephen Gemmett's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Gemmett was last updated on June 18, 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 March 31, 2006PECOS EnrolledAccepts Medicare Assignment

19 OLD ROLLINSFORD RD, BUILDING B, DOVER, NH 03820(603) 516-4265(603) 740-2173 Get Directions Write a Review

NPPES record last updated: June 18, 2015. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Stephen M Gemmett Md NPPES

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

STEPHEN M GEMMETT MD (NPI 1518928316) is an individual vascular surgery provider in Dover, New Hampshire, licensed in New Hampshire (12061) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Wentworth-douglass Hospital, and is a graduate of Albany Medical College Of Union University (1991).

NPPES Registry Identity

NPI1518928316

Entity TypeIndividualMale

Primary Taxonomy2086S0129X

Provider Legal NameSTEPHEN M GEMMETTCredential: MD

Location Address19 OLD ROLLINSFORD RD, BUILDING BDover, NH 03820-2807

Mailing Address789 Central AveDover, NH 03820-2526 · (603) 516-4265 · Fax (603) 740-2713

Phone(603) 516-4265

Fax(603) 740-2173

Sole ProprietorNo

Medical School CMSAlbany Medical College Of Union UniversityGraduated 1991

Enumeration DateMarch 31, 2006

Last NPPES UpdateJune 18, 2015

✔ NPI 1518928316 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code2086S0129X

License✔ Licensed in NH · 12061

Definition

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Also ListedSurgeryTaxonomy 208600000X · License 12061 (NH)

19 OLD ROLLINSFORD RD, Dover, NH 03820

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Other Identifiers 4

Medicaid3075234NH

Medicare UPING61543

Medicaid1518928316ME

Medicare PINT400207710NH

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

Stephen M Gemmett 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 ID8022911288

PECOS Enrollment IDI20040127001040

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 Reassignment

Medicare enrollment records show Stephen Gemmett reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Wentworth Douglass Physician Corporation

0.1 mi

Magnetic Resonance Imaging

789 CENTRAL AVE
Dover, NH 03820

Reassigned Medicare billing, New Hampshire enrollment
559 clinicians in this Medicare group

NPI 1447352430 (603) 742-5252

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 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.

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.

272 services191 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

121 services115 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

119 services118 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

74 services73 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

68 services67 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.

64 services28 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

63 services59 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.

61 services61 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

42 services42 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

42 services42 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.

32 services31 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

29 services24 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

25 services25 patients

Ultrasound of both sides of head and neck blood flow 93880

24 services24 patients

Ultrasound of one leg arteries or artery grafts 93926

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

19 services17 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.

18 services18 patients

Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist 36902

This procedure involves inserting a needle or tube into your hemodialysis circuit, a system that cleans your blood when your kidneys can't. A balloon is then used to widen a narrow section of this circuit. A radiologist reviews the procedure to ensure accuracy.

15 services11 patients

Complete ultrasound study of arm and leg arteries 93923

14 services14 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

14 services14 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

13 services11 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

13 services13 patients

Removal of tunneled central venous tube 36589

A tunneled central venous tube removal is a procedure to take out a long, thin tube that was previously placed in a large vein in your body. This tube helps deliver medication or nutrition. The removal is usually quick and done under local anesthesia.

12 services11 patients

Hospital Affiliations CMS Care Compare

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

Wentworth-Douglass Hospital

Acute Care Hospitals · Dover, NH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number300018

Location789 Central AveDover, NH 03820 · Strafford County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03820 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

$89.14 typical visit price

range $57.75 – $174.26

Typical copayment $22.28 (range $14.43 – $43.56)

Most-billed visit code 99203

Established Patient

$71.85 typical visit price

range $18.70 – $142.15

Typical copayment $17.96 (range $4.67 – $35.53)

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 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FAISAL ALI SHAMSHAD MD

Internal Medicine (Interventional Cardiology)

19 OLD ROLLINSFORD RD, BUILDING B
DOVER, NH 03820

Strafford County (603) 516-4265

LISA M LANG APRN

Nurse Practitioner (Adult Health)

19 OLD ROLLINSFORD RD, BUILDING B
DOVER, NH 03820

Strafford County (603) 516-4265

MRS. MARJORIE COLSON ARNP

Nurse Practitioner (Primary Care)

19 OLD ROLLINSFORD RD
DOVER, NH 03820

Strafford County (603) 749-2346

WILLIAM S DANFORD MD

Internal Medicine (Cardiovascular Disease)

19 OLD ROLLINSFORD RD, BUILDING B
DOVER, NH 03820

Strafford County (603) 516-4265

DR. KRISTY WEBSTER MD

Internal Medicine (Cardiovascular Disease)

19 OLD ROLLINSFORD RD
DOVER, NH 03820

Strafford County (603) 516-4265

EMILY MEDEIROS

Physician Assistant

19 OLD ROLLINSFORD RD, BUILDING B
DOVER, NH 03820

Strafford County (603) 516-4265

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 Stephen Gemmett's NPI number?

The NPI number for Stephen Gemmett is 1518928316. It was assigned to this individual provider in the NPPES registry on March 31, 2006.

Where is Stephen Gemmett located?

Stephen Gemmett practices at 19 Old Rollinsford Rd Building B, Dover, NH 03820. The listed phone number is (603) 516-4265.

What is Stephen Gemmett's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Is Stephen Gemmett enrolled in Medicare?

Yes. Stephen Gemmett 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 organization bills Medicare for Stephen Gemmett's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Gemmett reassigns Medicare benefits to Wentworth Douglass Physician Corporation (Dover, NH). The 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 Stephen Gemmett's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Stephen Gemmett affiliated with any hospitals?

According to CMS data, Stephen Gemmett is affiliated with Wentworth-Douglass Hospital.

When was this NPI record last updated?

The NPPES record for Stephen Gemmett was last updated on June 18, 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.