DR. SAMANTHA A. DIAMOND-ROSSI MD
NPI 1265850903
Internal Medicine - Endocrinology, Diabetes & Metabolism in Fairfax, VA

Q: What is Samantha Diamond-rossi's NPI number?

The NPI number for Samantha Diamond-rossi is 1265850903. It was assigned to this individual provider in the NPPES registry on March 31, 2014.

Q: What is Samantha Diamond-rossi's specialty?

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

Active since March 31, 2014PECOS EnrolledAccepts Medicare Assignment

81.28/100

CMS Quality Rating

8081 INNOVATION PARK DR, FAIRFAX, VA 22031(571) 472-1600(571) 472-1601 Get Directions Write a Review

NPPES record last updated: April 23, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 23, 2026, Feb 2, 2021, Oct 16, 2020 (3 updates tracked since 2020).

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About Dr. Samantha A. Diamond-rossi Md NPPES

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

DR. SAMANTHA A. DIAMOND-ROSSI MD (NPI 1265850903) is an individual endocrinology, diabetes & metabolism provider in Fairfax, Virginia, licensed in Virginia (0101266652) and active in the NPI registry since March 2014. She is enrolled in Medicare PECOS, is affiliated with Inova Alexandria Hospital, and maintains a secondary practice location in Falls Church.

NPPES Registry Identity

NPI1265850903

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameDR. SAMANTHA A. DIAMOND-ROSSICredential: MD

Location Address8081 INNOVATION PARK DRFairfax, VA 22031-4867

Mailing AddressPo Box 37174Baltimore, MD 21297-3174 · (571) 423-5699 · Fax (571) 423-5698

Phone(571) 472-1600

Fax(571) 472-1601

Sole ProprietorNo

Medical School CMSOtherGraduated 2014

Enumeration DateMarch 31, 2014

Last NPPES UpdateApril 23, 20263 updates tracked since enumeration

NPPES CertifiedApril 23, 2026

✔ NPI 1265850903 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

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

Taxonomy Code207RE0101X

License✔ Licensed in VA · 0101266652

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License 0101266652 (VA)

8081 INNOVATION PARK DR, Fairfax, VA 22031

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Secondary Practice Location 1

Location 13300 Gallows RdFalls Church, VA 22042-3307 · Phone (703) 776-4001

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

Dr. Samantha A. Diamond-rossi 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 ID8729316468

PECOS Enrollment IDI20190820001461

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 Samantha Diamond-rossi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Inova Health Care Services

Same address

Medical Oncology

8081 INNOVATION PARK DR
Fairfax, VA 22031

Reassigned Medicare billing, District of Columbia and Virginia enrollments
Also billed through NPI 1952320061 (District of Columbia), NPI 1588717755 (Virginia)
258 clinicians in this Medicare group

NPI 1275097123 (703) 289-2454

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 3

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.

80 services53 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.

17 services17 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.

17 services15 patients

Hospital Affiliations CMS Care Compare 3

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

Inova Alexandria Hospital

Acute Care Hospitals · Alexandria, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490040

Location4320 Seminary RdAlexandria, VA 22304 · Alexandria City County

Emergency services Birthing friendly

Inova Loudoun Hospital

Acute Care Hospitals · Leesburg, VA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490043

Location44045 Riverside ParkwayLeesburg, VA 20176 · Loudoun County

Emergency services Birthing friendly

Inova Fairfax Hospital

Acute Care Hospitals · Falls Church, VA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490063

Location3300 Gallows RoadFalls Church, VA 22042 · Fairfax County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22031 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

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.

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.

81.28/100

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

Scored as part of a group practice

Quality

70.77

Promoting Interoperability

100

Improvement Activities

Cost

66.84

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.

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