DR. GREGORY PETER CEJAS MD
NPI 1225558802
Psychiatry & Neurology - Psychiatry in Saint Louis, MO

Q: What is Gregory Cejas's NPI number?

The NPI number for Gregory Cejas is 1225558802. It was assigned to this individual provider in the NPPES registry on June 23, 2017.

Q: What is Gregory Cejas's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregory Cejas was last updated on April 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 June 23, 2017PECOS EnrolledAccepts Medicare Assignment

79.29/100

CMS Quality Rating

4444 FOREST PARK AVE, STE 2600, SAINT LOUIS, MO 63108(314) 286-1700(314) 286-1730 Get Directions Write a Review

NPPES record last updated: April 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Jul 12, 2022 and 1 more (4 updates tracked since 2017).

On this page

About Dr. Gregory Peter Cejas Md NPPES

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

DR. GREGORY PETER CEJAS MD (NPI 1225558802) is an individual psychiatry provider in Saint Louis, Missouri, licensed in Missouri (2019022607) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1225558802

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. GREGORY PETER CEJASCredential: MD

Location Address4444 FOREST PARK AVE, STE 2600Saint Louis, MO 63108-2212

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 286-1700 · Fax (314) 286-1730

Phone(314) 286-1700

Fax(314) 286-1730

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateJune 23, 2017

Last NPPES UpdateApril 15, 20254 updates tracked since enumeration

✔ NPI 1225558802 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in MO · 2019022607

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.

4444 FOREST PARK AVE, Saint Louis, MO 63108

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Other Identifiers 1

Medicaid200061871MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica.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. Gregory Peter Cejas Md 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 ID8426382037

PECOS Enrollment IDI20220608001249

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 63108 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

$169.38 typical visit price

range $55.65 – $169.38

Typical copayment $42.34 (range $13.91 – $42.34)

Most-billed visit code 99205

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.29/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

71.46

Promoting Interoperability

100

Improvement Activities

Cost

59.51

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.

DR. PATRICIA TEREESE JIMENEZ MD

Obstetrics & Gynecology (Reproductive Endocrinology)

4444 FOREST PARK AVE, DIV OB REPRODUCTIVE ENDOCRINOLOGY, STE 3100
SAINT LOUIS, MO 63108

St. Louis City (314) 286-2400

DR. DANIELLE BUCHANAN IVIE DPT

Physical Therapist

4444 FOREST PARK AVE, STE 1210
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1940

MS. MARY GRACE PORTELL LPC

Counselor (Professional)

4444 FOREST PARK AVE, STE 2600
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1700

MRS. PATRICIA K NELLIS OT

Occupational Therapist

4444 FOREST PARK AVE, DEPT OCCUPATIONAL THERAPY, STE 2210
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1669

DR. KELLY N BOTTERON MD

Psychiatry & Neurology (Child & Adolescent Psychiatry)

4444 FOREST PARK AVE, STE 2600
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1700

DR. ROBERT P FUCETOLA PHD

Clinical Neuropsychologist

4444 FOREST PARK AVE, DIV NEUROPSYCHOLOGY, 2ND FL
SAINT LOUIS, MO 63108

St. Louis City (314) 362-1408

MS. CHERYL L KLOHR MS OT

Occupational Therapist

4444 FOREST PARK AVE
SAINT LOUIS, MO 63108

St. Louis City (314) 362-5079

MS. BRIDGET O OCHUKO DPT

Physical Therapist

4444 FOREST PARK AVE, STE 1210
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1940

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 Gregory Cejas's NPI number?

The NPI number for Gregory Cejas is 1225558802. It was assigned to this individual provider in the NPPES registry on June 23, 2017.

Where is Gregory Cejas located?

Gregory Cejas practices at 4444 Forest Park Ave Ste 2600, Saint Louis, MO 63108. The listed phone number is (314) 286-1700.

What is Gregory Cejas's specialty?

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

Is Gregory Cejas enrolled in Medicare?

Yes. Gregory Cejas 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 Gregory Cejas accept?

Health plans from Medica list Gregory Cejas 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 Gregory Cejas was last updated on April 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.