DR. RENE AVANS DER GREGORIAN D.M.D.
NPI 1285612416
Dentist in Pasadena, CA

Q: What is Rene Der Gregorian's NPI number?

The NPI number for Rene Der Gregorian is 1285612416. It was assigned to this individual provider in the NPPES registry on January 6, 2006.

Q: What is Rene Der Gregorian's specialty?

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

Active since January 06, 2006PECOS Enrolled

988 E WASHINGTON BLVD, PASADENA, CA 91104(626) 296-6600 Get Directions Write a Review

NPPES record last updated: February 2, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Rene Avans Der Gregorian D.m.d. NPPES

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

DR. RENE AVANS DER GREGORIAN D.M.D. (NPI 1285612416) is an individual dentist in Pasadena, California, licensed in California (58165) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285612416

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameDR. RENE AVANS DER GREGORIANCredential: D.M.D.

Location Address988 E WASHINGTON BLVDPasadena, CA 91104-2438

Mailing Address1255 N Virgil Ave, #1Los Angeles, CA 90029-2024 · (818) 653-3825

Phone(626) 296-6600

Sole ProprietorNo

Enumeration DateJanuary 6, 2006

Last NPPES UpdateFebruary 2, 2026

NPPES CertifiedFebruary 2, 2026

✔ NPI 1285612416 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in CA · 58165

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.

988 E WASHINGTON BLVD, Pasadena, CA 91104

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas 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. Rene Avans Der Gregorian D.m.d. 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 91104 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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 Rene Der Gregorian's NPI number?

The NPI number for Rene Der Gregorian is 1285612416. It was assigned to this individual provider in the NPPES registry on January 6, 2006.

Where is Rene Der Gregorian located?

Rene Der Gregorian practices at 988 E Washington Blvd, Pasadena, CA 91104. The listed phone number is (626) 296-6600.

What is Rene Der Gregorian's specialty?

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

Is Rene Der Gregorian enrolled in Medicare?

Yes. Rene Der Gregorian is registered in the Medicare PECOS enrollment system.

What insurance does Rene Der Gregorian accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Humana list Rene Der Gregorian 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 Rene Der Gregorian was last updated on February 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.