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DR. OMAR K MAHMASSANI D.D.S.
NPI 1497781850
Dentist in Frederick, MD

Active since June 25, 2006PECOS Enrolled
5910 FREDERICK CROSSING LN STE 101, FREDERICK, MD 21704(301) 662-4422(301) 965-8360 Get Directions Write a Review

NPPES record last updated: May 12, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 12, 2026, Apr 28, 2026, Aug 20, 2021 and 1 more (4 updates tracked since 2017).

About Dr. Omar K Mahmassani D.d.s. NPPES

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

DR. OMAR K MAHMASSANI D.D.S. (NPI 1497781850) is an individual dentist in Frederick, Maryland, licensed in Maryland (10913) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1497781850
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameDR. OMAR K MAHMASSANICredential: D.D.S.
Location Address5910 FREDERICK CROSSING LN STE 101Frederick, MD 21704-5141
Mailing Address5910 Frederick Crossing Ln, Suite 101Frederick, MD 21704-5112 · (301) 662-4422 · Fax (301) 965-8360
Phone(301) 662-4422
Fax(301) 965-8360
Sole ProprietorYes
Enumeration DateJune 25, 2006
Last NPPES UpdateMay 12, 20264 updates tracked since enumeration
NPPES CertifiedMay 12, 2026
✔ NPI 1497781850 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in MD · 10913
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
Also ListedDurable Medical Equipment & Medical Supplies · Customized EquipmentTaxonomy 332BC3200X · License 10913 (MD)
5910 FREDERICK CROSSING LN STE 101, Frederick, MD 21704
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Omar K Mahmassani D.d.s. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21704 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
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$72.23 typical visit price
range $18.66 – $143.02
Typical copayment $18.05 (range $4.66 – $35.75)
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.

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 Omar Mahmassani's NPI number?

The NPI number for Omar Mahmassani is 1497781850. It was assigned to this individual provider in the NPPES registry on June 25, 2006.

Where is Omar Mahmassani located?

Omar Mahmassani practices at 5910 Frederick Crossing Ln Ste 101, Frederick, MD 21704. The listed phone number is (301) 662-4422.

What is Omar Mahmassani's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Is Omar Mahmassani enrolled in Medicare?

Yes. Omar Mahmassani is registered in the Medicare PECOS enrollment system.

What insurance does Omar Mahmassani accept?

Health plans from BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Florida Combined Life and 3 other insurers list Omar Mahmassani 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.

When was this NPI record last updated?

The NPPES record for Omar Mahmassani was last updated on May 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.