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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

NICHOLAS RONALD GREGORIO MD
NPI 1497382998
Psychiatry & Neurology - Psychiatry in Modesto, CA

Active since March 24, 2020PECOS Enrolled
500 N 9TH ST, MODESTO, CA 95350(209) 558-4598 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

Record update history: Sep 21, 2026, Jul 1, 2025, Apr 1, 2025 and 2 more (5 updates tracked since 2020).

About Nicholas Ronald Gregorio Md NPPES

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

NICHOLAS RONALD GREGORIO MD (NPI 1497382998) is an individual psychiatry provider in Modesto, California, licensed in California (A200776) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1497382998
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameNICHOLAS RONALD GREGORIOCredential: MD
Location Address500 N 9TH STModesto, CA 95350-5814
Mailing Address1113 Arc WayModesto, CA 95350-5801 · (862) 579-8137
Phone(209) 558-4598
Sole ProprietorYes
Enumeration DateMarch 24, 2020
Last NPPES UpdateSeptember 21, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 21, 2026
✔ NPI 1497382998 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A200776
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedPsychiatry & Neurology · Forensic PsychiatryTaxonomy 2084F0202X · License A200776 (CA)
500 N 9TH ST, Modesto, CA 95350
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nicholas Ronald Gregorio Md 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 95350 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
$176.60 typical visit price
range $58.87 – $176.60
Typical copayment $44.15 (range $14.71 – $44.15)
Most-billed visit code 99205
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
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.

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.

DENISE M THOMASON
Specialist
500 N 9TH ST, SUITE B
MODESTO, CA 95350
Stanislaus County (209) 341-1824
CORDIA A LEHN
Social Worker
500 N 9TH ST, SUITE B
MODESTO, CA 95350
Stanislaus County (209) 341-1824
MS. BARBARA JUNE GUTIERREZ R.N.
Registered Nurse (Psychiatric/Mental Health)
500 N 9TH ST
MODESTO, CA 95350
Stanislaus County (209) 558-4610
MICHAEL SHANE THOMPSON RAS, CDAC
Case Manager/Care Coordinator
500 N 9TH ST
MODESTO, CA 95350
Stanislaus County (209) 541-2121
STANISLAUS COUNTY BHRS
Community/Behavioral Health
500 N 9TH ST
MODESTO, CA 95350
Stanislaus County (209) 525-6225
NOE GARCIA
Counselor
500 N 9TH ST, SUITE B
MODESTO, CA 95350
Stanislaus County (209) 341-1824
VIRGINIA CARNEY
Case Manager/Care Coordinator
500 N 9TH ST, SUITE C
MODESTO, CA 95350
Stanislaus County (209) 558-4420
TYRONE THOMPSON
Student in an Organized Health Care Education/Training Program
500 N 9TH ST, SUITE B
MODESTO, CA 95350
Stanislaus County (209) 341-1824

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 Nicholas Gregorio's NPI number?

The NPI number for Nicholas Gregorio is 1497382998. It was assigned to this individual provider in the NPPES registry on March 24, 2020.

Where is Nicholas Gregorio located?

Nicholas Gregorio practices at 500 N 9th St, Modesto, CA 95350. The listed phone number is (209) 558-4598.

What is Nicholas Gregorio's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Nicholas Gregorio enrolled in Medicare?

Yes. Nicholas Gregorio is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Nicholas Gregorio was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.