SIOBHAN FORBES RN, A-GNP-C
NPI 1104360825
Nurse Practitioner in Silver Spring, MD

Q: What is Siobhan Forbes's NPI number?

The NPI number for Siobhan Forbes is 1104360825. It was assigned to this individual provider in the NPPES registry on December 14, 2016.

Q: What is Siobhan Forbes's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Siobhan Forbes was last updated on December 14, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 December 14, 2016PECOS EnrolledAccepts Medicare Assignment

8700 GEORGIA AVE, SUITE 400, SILVER SPRING, MD 20910(301) 585-6049 Get Directions Write a Review

NPPES record last updated: December 14, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Siobhan Forbes Rn, A-gnp-c NPPES

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

SIOBHAN FORBES RN, A-GNP-C (NPI 1104360825) is an individual nurse practitioner in Silver Spring, Maryland, licensed in Maryland (R204594) and active in the NPI registry since December 2016. She is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1104360825

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameSIOBHAN FORBESCredential: RN, A-GNP-C

Location Address8700 GEORGIA AVE, SUITE 400Silver Spring, MD 20910-3618

Mailing Address8700 Georgia Ave, Suite 400Silver Spring, MD 20910-3618

Phone(301) 585-6049

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateDecember 14, 2016

✔ NPI 1104360825 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

Licenses✔ Licensed in MD · R204594✔ Licensed in DC · RN1011865

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

8700 GEORGIA AVE, Silver Spring, MD 20910

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Siobhan Forbes Rn, A-gnp-c 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 ID7911281225

PECOS Enrollment IDI20170306002106

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 Siobhan Forbes reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medical Faculty Associates, Inc

6.7 mi

Anesthesiology

2150 PENNSYLVANIA AVE NW, SUITE 10-409A
Washington, DC 20037

Reassigned Medicare billing, District of Columbia enrollment
1,275 clinicians in this Medicare group

NPI 1417990581 (202) 741-3350

Privia Care Center LLC

9.2 mi

Internal Medicine

950 N GLEBE RD, SUITE 4000
Arlington, VA 22203

Reassigned Medicare billing, District of Columbia enrollment
242 clinicians in this Medicare group

NPI 1164874426 (571) 366-8850

Privia Medical Group, LLC

9.2 mi

Internal Medicine

950 N GLEBE RD STE 700
Arlington, VA 22203

Reassigned Medicare billing, District of Columbia enrollment
1,534 clinicians in this Medicare group

NPI 1013042480 (571) 366-8850

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 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.

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.

369 services220 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

157 services114 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

117 services93 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.

84 services78 patients

Lipase (fat enzyme) level 83690

A Lipase Level test measures the amount of lipase in your blood. Lipase is an enzyme that helps your body digest fats. High or low levels can indicate problems with your pancreas, such as pancreatitis or other conditions. This test helps your doctor diagnose and monitor these conditions.

57 services56 patients

Measurement c-reactive protein for detection of infection or inflammation 86140

C-reactive protein (CRP) test is a blood test that checks for signs of inflammation or infection in the body. High levels of CRP often suggest that there's inflammation or a bacterial infection. This test helps in monitoring and managing conditions like arthritis and heart disease.

40 services32 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.

37 services32 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.

37 services33 patients

Stool analysis for blood, by fecal hemoglobin determination by immunoassay 82274

A stool analysis for blood, or fecal hemoglobin determination by immunoassay, is a test that checks for hidden blood in your stool. This test helps identify potential issues in your digestive system. It involves collecting a small stool sample which is then analyzed in a lab for the presence of blood.

31 services29 patients

Ferritin (blood protein) level 82728

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

31 services27 patients

Measurement of hydrogen in breath to test for stomach and bowel symptoms 91065

This test involves breathing into a bag to measure hydrogen levels in your breath. High levels can indicate issues with food digestion or absorption in your stomach or intestines. It's non-invasive, painless, and helps diagnose certain gastrointestinal conditions.

30 services27 patients

Iron level 83540

An iron level test measures the amount of iron in your blood. Iron is crucial for producing hemoglobin, a protein in red blood cells that carries oxygen throughout your body. This test helps identify iron deficiencies or excesses, which can lead to conditions like anemia or hemochromatosis.

29 services28 patients

Iron binding capacity 83550

Iron binding capacity is a blood test that measures how well your body can bind and transport iron. This helps your healthcare provider assess if your body has too little or too much iron, which can indicate certain health conditions.

29 services28 patients

Red blood cell sedimentation rate, to detect inflammation, non-automated 85651

The Red Blood Cell Sedimentation Rate test measures how quickly red blood cells settle at the bottom of a test tube. If they settle faster than normal, it may indicate inflammation in the body. This test is non-automated, meaning it's manually performed by a lab technician.

23 services17 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

22 services22 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.

17 services17 patients

Manual urinalysis test with examination using microscope, automated 81001

A manual urinalysis test with automated microscopic examination is a lab process that checks your urine for health indicators. It involves a machine scanning your sample to identify any abnormal elements, which can assist in diagnosing various conditions.

16 services14 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

13 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Holy Cross Hospital

Acute Care Hospitals · Silver Spring, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number210004

Location1500 Forest Glen RoadSilver Spring, MD 20910 · Montgomery County

Birthing friendly

Adventist Healthcare Shady Grove Medical Center

Acute Care Hospitals · Rockville, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210057

Location9901 Medical Center DriveRockville, MD 20850 · Montgomery County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20910 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

$100.31 typical visit price

range $65.18 – $194.86

Typical copayment $25.07 (range $16.29 – $48.71)

Most-billed visit code 99203

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

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.

Other Providers at the Same Location NPPES 11

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

ACUMEDICINE ACUPUNCTURE, PC

Acupuncturist

8700 GEORGIA AVE
SILVER SPRING, MD 20910

Montgomery County (240) 461-9300

ACUMEDICINE ASSOCIATES, P.C.

Acupuncturist

8700 GEORGIA AVE, SUITE 404
SILVER SPRING, MD 20910

Montgomery County (301) 562-0305

MS. JOANNE ELIZABETH KING NP

Nurse Practitioner (Primary Care)

8700 GEORGIA AVE, SUITE 400
SILVER SPRING, MD 20910

Montgomery County (301) 585-6049

WELLNESS IN MIND LLC

Counselor (Professional)

8700 GEORGIA AVE, SUITE 304
SILVER SPRING, MD 20910

Montgomery County (703) 288-9595

DR. GAIL POVAR M.D.

Internal Medicine

8700 GEORGIA AVE, STE 400
SILVER SPRING, MD 20910

Montgomery County (301) 585-6980

DR. HELENE DUMONT M.D.

Family Medicine (Adult Medicine)

8700 GEORGIA AVE, STE 400
SILVER SPRING, MD 20910

Montgomery County (301) 585-6980

MS. SHERYL LYNN HONGSERMEIER R.N., L.AC.

Acupuncturist

8700 GEORGIA AVE, SUITE 404
SILVER SPRING, MD 20910

Montgomery County (301) 562-0305

DR. RUTH KEVESS-COHEN M.D.

Internal Medicine (Geriatric Medicine)

8700 GEORGIA AVE, STE 400
SILVER SPRING, MD 20910

Montgomery County (301) 585-6980

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 Siobhan Forbes's NPI number?

The NPI number for Siobhan Forbes is 1104360825. It was assigned to this individual provider in the NPPES registry on December 14, 2016.

Where is Siobhan Forbes located?

Siobhan Forbes practices at 8700 Georgia Ave Suite 400, Silver Spring, MD 20910. The listed phone number is (301) 585-6049.

What is Siobhan Forbes's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Siobhan Forbes enrolled in Medicare?

Yes. Siobhan Forbes 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 Siobhan Forbes's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siobhan Forbes reassigns Medicare benefits to 3 organizations: Medical Faculty Associates, Inc (Washington, DC), Privia Care Center LLC (Arlington, VA) and Privia Medical Group, LLC (Arlington, VA). 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 Siobhan Forbes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Siobhan Forbes accept?

Health plans from Oscar Health list Siobhan Forbes 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 Siobhan Forbes affiliated with any hospitals?

According to CMS data, Siobhan Forbes is affiliated with Holy Cross Hospital and Adventist Healthcare Shady Grove Medical Center.

When was this NPI record last updated?

The NPPES record for Siobhan Forbes was last updated on December 14, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.