DENIS GRIGOROV NP
NPI 1548968167
Nurse Practitioner - Psychiatric/Mental Health in Monrovia, CA

Q: What is Denis Grigorov's NPI number?

The NPI number for Denis Grigorov is 1548968167. It was assigned to this individual provider in the NPPES registry on February 22, 2023.

Q: What is Denis Grigorov's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Q: When was this NPI record last updated?

The NPPES record for Denis Grigorov was last updated on January 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.

Active since February 22, 2023PECOS EnrolledAccepts Medicare Assignment

517 S IVY AVE, MONROVIA, CA 91016(323) 961-2545(323) 927-1550 Get Directions Write a Review

NPPES record last updated: January 9, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 9, 2026, Feb 27, 2025, Jul 21, 2023 and 1 more (4 updates tracked since 2023).

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About Denis Grigorov Np NPPES

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

DENIS GRIGOROV NP (NPI 1548968167) is an individual psychiatric/mental health provider in Monrovia, California, licensed in California (95026111) and active in the NPI registry since February 2023. He is enrolled in Medicare PECOS, maintains a secondary practice location in Long Beach, and is a graduate of Other (2023).

NPPES Registry Identity

NPI1548968167

Entity TypeIndividualMale

Primary Taxonomy363LP0808X

Provider Legal NameDENIS GRIGOROVCredential: NP

Location Address517 S IVY AVEMonrovia, CA 91016-2827

Mailing Address7015 Wilcox AveBell, CA 90201-3814 · (469) 396-3369 · Fax (888) 528-7464

Phone(323) 961-2545

Fax(323) 927-1550

Sole ProprietorNo

Medical School CMSOtherGraduated 2023

Enumeration DateFebruary 22, 2023

Last NPPES UpdateJanuary 9, 20264 updates tracked since enumeration

NPPES CertifiedJanuary 9, 2026

✔ NPI 1548968167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

License✔ Licensed in CA · 95026111

517 S IVY AVE, Monrovia, CA 91016

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Secondary Practice Location 1

Location 15838 E Naples PlzLong Beach, CA 90803-5039 · Phone (877) 624-1427 · Fax (323) 927-1550

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

Denis Grigorov Np 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 ID2062901879

PECOS Enrollment IDI20251031000800

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 Denis Grigorov reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

D & y Integrated Psychiatry

Same address

Psychiatric/Mental Health

517 S IVY AVE
Monrovia, CA 91016

Reassigned Medicare billing, California enrollment

NPI 1023993003 (469) 396-3369

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91016 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

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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 15

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

D&Y INTEGRATED PSYCHIATRY

Nurse Practitioner (Psychiatric/Mental Health)