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DR. ARASH ZARRIN DO
NPI 1407351729
Internal Medicine - Gastroenterology in Frederick, MD

Active since March 28, 2018PECOS EnrolledAccepts Medicare Assignment
110 THOMAS JOHNSON DR STE 335, FREDERICK, MD 21702(301) 624-5566(301) 624-5542 Get Directions Write a Review

NPPES record last updated: September 16, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 16, 2025, Mar 2, 2023, Sep 10, 2020 and 1 more (4 updates tracked since 2018).

About Dr. Arash Zarrin Do NPPES

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

DR. ARASH ZARRIN DO (NPI 1407351729) is an individual gastroenterology provider in Frederick, Maryland, licensed in Maryland (H0096679) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and is a graduate of Nova Southeastern College Of Osteo Medicine (2018).

NPPES Registry Identity

NPI1407351729
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. ARASH ZARRINCredential: DO
Location Address110 THOMAS JOHNSON DR STE 335Frederick, MD 21702-4949
Mailing Address110 Thomas Johnson Dr Ste 335Frederick, MD 21702-4949 · (301) 624-5566
Phone(301) 624-5566
Fax(301) 624-5542
Sole ProprietorNo
Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 2018
Enumeration DateMarch 28, 2018
Last NPPES UpdateSeptember 16, 20254 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2025
✔ NPI 1407351729 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in MD · H0096679
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
110 THOMAS JOHNSON DR STE 335, Frederick, MD 21702
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Other Names 1

Former Name (1)Aurash Zarrinbakhsh

Other Identifiers 1

Medicaid215777200MD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Maintenance Organization of Florida, Oscar Insurance Company.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. Arash Zarrin Do 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 ID8022438944
PECOS Enrollment IDI20240415000964
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 2

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.

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.
20 services20 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.
16 services15 patients

Hospital Affiliations CMS Care Compare

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

Frederick Health Hospital

Acute Care Hospitals · Frederick, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210005
Location400 West Seventh StFrederick, MD 21701 · Frederick County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21702 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
$133.05 typical visit price
range $57.99 – $175.57
Typical copayment $33.26 (range $14.49 – $43.89)
Most-billed visit code 99204
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
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 4

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

DAVID W. KOSSOFF, M.D., LLC
Specialist
110 THOMAS JOHNSON DR STE 335
FREDERICK, MD 21702
Frederick County (301) 624-5566
DAVID W KOSSOFF M.D.
Specialist
110 THOMAS JOHNSON DR STE 335
FREDERICK, MD 21702
Frederick County (301) 624-5566
PILIN DHOIEAM FRANCIS DO
Internal Medicine (Gastroenterology)
110 THOMAS JOHNSON DR STE 335
FREDERICK, MD 21702
Frederick County (301) 624-5566
LINDSAY BITTO
Nurse Practitioner (Family)
110 THOMAS JOHNSON DR STE 335
FREDERICK, MD 21702
Frederick County (301) 624-5566

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 Arash Zarrin's NPI number?

The NPI number for Arash Zarrin is 1407351729. It was assigned to this individual provider in the NPPES registry on March 28, 2018. The provider is also known as Aurash Zarrinbakhsh.

Where is Arash Zarrin located?

Arash Zarrin practices at 110 Thomas Johnson Dr Ste 335, Frederick, MD 21702. The listed phone number is (301) 624-5566.

What is Arash Zarrin's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Arash Zarrin enrolled in Medicare?

Yes. Arash Zarrin 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 Arash Zarrin accept?

Health plans from Oscar Health Maintenance Organization of Florida and Oscar Insurance Company list Arash Zarrin 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 Arash Zarrin affiliated with any hospitals?

According to CMS data, Arash Zarrin is affiliated with Frederick Health Hospital.

When was this NPI record last updated?

The NPPES record for Arash Zarrin was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.