DR. SUSAN PENG DEMAREST MD
NPI 1558680504
Internal Medicine - Endocrinology, Diabetes & Metabolism in Niskayuna, NY

Q: What is Susan Demarest's NPI number?

The NPI number for Susan Demarest is 1558680504. It was assigned to this individual provider in the NPPES registry on May 28, 2010.

Q: What is Susan Demarest's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Susan Demarest was last updated on March 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 May 28, 2010PECOS EnrolledAccepts Medicare Assignment

2125 RIVER RD STE 303, NISKAYUNA, NY 12309(518) 213-6910(518) 213-6915 Get Directions Write a Review

NPPES record last updated: March 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 13, 2026, Nov 15, 2021 (2 updates tracked since 2021).

On this page

About Dr. Susan Peng Demarest Md NPPES

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

DR. SUSAN PENG DEMAREST MD (NPI 1558680504) is an individual endocrinology, diabetes & metabolism provider in Niskayuna, New York, licensed in New York (277624) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS, is affiliated with Albany Medical Center Hospital, and is a graduate of Virginia Commonwealth University, School Of Medicine (2010).

NPPES Registry Identity

NPI1558680504

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameDR. SUSAN PENG DEMARESTCredential: MD

Location Address2125 RIVER RD STE 303Niskayuna, NY 12309-1136

Mailing Address711 Troy Schenectady Rd Ste 203Latham, NY 12110-2461

Phone(518) 213-6910

Fax(518) 213-6915

Sole ProprietorNo

Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2010

Enumeration DateMay 28, 2010

Last NPPES UpdateMarch 13, 20262 updates tracked since enumeration

NPPES CertifiedMarch 13, 2026

✔ NPI 1558680504 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in NY · 277624

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

2125 RIVER RD STE 303, Niskayuna, NY 12309

Open in Google Maps ↗

Other Identifiers 1

Medicaid04102383NY

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. Susan Peng Demarest 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 ID6901045186

PECOS Enrollment IDI20150716001400

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, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

720 services12 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.

234 services126 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

144 services78 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

94 services45 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.

85 services64 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

67 services47 patients

Kidney function blood test panel 80069

A kidney function blood test panel checks how well your kidneys are working. It measures levels of various substances in your blood, including proteins, electrolytes, and waste products. The results can help detect potential kidney issues early.

66 services48 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

63 services43 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

62 services18 patients

Thyroxine (thyroid chemical), free 84439

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

60 services38 patients

Parathormone (parathyroid hormone) level 83970

The Parathormone level test measures the amount of parathyroid hormone in your blood. This hormone controls calcium and phosphorus levels in the body, which are vital for bone health. Abnormal levels may indicate issues like kidney disease or parathyroid gland disorders.

47 services35 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

32 services28 patients

Urine microalbumin (protein) level 82043

The urine microalbumin level test measures the amount of a protein called albumin in your urine. This test helps to detect early signs of kidney damage. High levels of albumin may suggest your kidneys aren't functioning properly. It's a simple, non-invasive test that involves providing a urine sample.

31 services30 patients

Creatinine level to test for kidney function or muscle injury 82570

A creatinine level test measures the amount of creatinine in your blood. This substance is a waste product from normal muscle use. Higher levels can indicate possible kidney dysfunction or muscle injury. This test helps monitor kidney health.

31 services30 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.

30 services30 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.

25 services18 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

24 services22 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

Hospital Affiliations CMS Care Compare 5

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

Albany Medical Center Hospital

Acute Care Hospitals · Albany, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330013

Location43 New Scotland Avenue, Mail Code 34Albany, NY 12208 · Albany County

Emergency services Birthing friendly

Columbia Memorial Hospital

Acute Care Hospitals · Hudson, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330094

Location71 Prospect AvenueHudson, NY 12534 · Columbia County

Emergency services

Ellis Hospital

Acute Care Hospitals · Schenectady, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330153

Location1101 Nott StreetSchenectady, NY 12308 · Schenectady County

Emergency services Birthing friendly

Samaritan Hospital Of Troy, New York

Acute Care Hospitals · Troy, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330180

Location2215 Burdett AvenueTroy, NY 12180 · Rensselaer County

Emergency services Birthing friendly

Saratoga Hospital

Acute Care Hospitals · Saratoga Springs, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330222

Location211 Church StreetSaratoga Springs, NY 12866 · Saratoga County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 12309 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

$126.40 typical visit price

range $54.87 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.08 typical visit price

range $17.54 – $136.14

Typical copayment $24.27 (range $4.38 – $34.03)

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.

Referred Medical Equipment & Supplies CMS DME claims 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of insulin infusion catheter, per week A4224

DME-Other DME · category DE017N

4 suppliers30 claims387 services$18.08 avg. paid by Medicare

Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225

DME-Other DME · category DE017N

5 suppliers33 claims1,250 services$2.37 avg. paid by Medicare

Supply allowance for adjunctive continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service A4238

DME-Medical/Surgical Supplies · category DA000N

2 suppliers18 claims18 services$172.61 avg. paid by Medicare

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

16 suppliers75 claims299 services$6.46 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

12 suppliers30 claims75 services$1.14 avg. paid by Medicare

External ambulatory infusion pump, insulin E0784

DME-Other DME · category DE017N

1 supplier22 claims22 services$288.12 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

JOSEPH A PETROSINO P.A.

Physician Assistant

2125 RIVER RD STE 303
SCHENECTADY, NY 12309

Schenectady County (518) 831-2500

COMMUNITY CARE PHYSICIANS, PC

Psychologist

2125 RIVER RD STE 303
NISKAYUNA, NY 12309

Schenectady County (518) 452-1337

CATHERINE DASCHER RD, CDE

Nutritionist (Nutrition, Education)

2125 RIVER RD STE 303
NISKAYUNA, NY 12309

Schenectady County (518) 213-6910

MS. SHULAMIT K. SHECHTER RDN, CDCES

Nutritionist (Nutrition, Education)

2125 RIVER RD STE 303
SCHENECTADY, NY 12309

Schenectady County (518) 213-6910

MICHAEL GRANT O'ROURKE PA-C

Physician Assistant

2125 RIVER RD STE 303
NISKAYUNA, NY 12309

Schenectady County (518) 213-6910

MS. CHRISTINA L ALLEN FNP

Nurse Practitioner (Family)

2125 RIVER RD STE 303
SCHENECTADY, NY 12309

Schenectady County (518) 831-2500

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 Susan Demarest's NPI number?

The NPI number for Susan Demarest is 1558680504. It was assigned to this individual provider in the NPPES registry on May 28, 2010.

Where is Susan Demarest located?

Susan Demarest practices at 2125 River Rd Ste 303, Niskayuna, NY 12309. The listed phone number is (518) 213-6910.

What is Susan Demarest's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Susan Demarest enrolled in Medicare?

Yes. Susan Demarest 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.

Is Susan Demarest affiliated with any hospitals?

According to CMS data, Susan Demarest is affiliated with Albany Medical Center Hospital, Columbia Memorial Hospital, Ellis Hospital, Samaritan Hospital Of Troy, New York and Saratoga Hospital.

When was this NPI record last updated?

The NPPES record for Susan Demarest was last updated on March 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.