1. Home
  2. Directory
  3. California
  4. Davis
  5. Psychiatry Neurology
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

AJAY PAL SINGH M.D.
NPI 1689830408
Psychiatry & Neurology - Psychiatry in Davis, CA

Active since July 31, 2008PECOS EnrolledAccepts Medicare Assignment
1590 DREW AVE STE 200, DAVIS, CA 95618(530) 297-7500(530) 297-7751 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 26, 2026, Mar 29, 2018, Oct 29, 2017 (3 updates tracked since 2017).

About Ajay Pal Singh M.d. NPPES

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

AJAY PAL SINGH M.D. (NPI 1689830408) is an individual psychiatry provider in Davis, California, licensed in California (A118490) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1997).

NPPES Registry Identity

NPI1689830408
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameAJAY PAL SINGHCredential: M.D.
Location Address1590 DREW AVE STE 200Davis, CA 95618-7848
Mailing Address3835 N Freeway Blvd Ste 100Sacramento, CA 95834-1954 · (916) 576-7900 · Fax (916) 285-0338
Phone(530) 297-7500
Fax(530) 297-7751
Sole ProprietorNo
Medical School CMSOtherGraduated 1997
Enumeration DateJuly 31, 2008
Last NPPES UpdateJuly 1, 20263 updates tracked since enumeration
NPPES CertifiedJuly 1, 2026
✔ NPI 1689830408 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 · A118490
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 · Child & Adolescent PsychiatryTaxonomy 2084P0804X · License A118490 (CA)
1590 DREW AVE STE 200, Davis, CA 95618
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.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

Ajay Pal Singh M.d. 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 ID9032368170
PECOS Enrollment IDI20121004000242
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 95618 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
$180.85 typical visit price
range $60.44 – $180.85
Typical copayment $45.21 (range $15.11 – $45.21)
Most-billed visit code 99205
Established Patient
$75.03 typical visit price
range $19.88 – $148.15
Typical copayment $18.75 (range $4.97 – $37.03)
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 3

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

CATHERINE SCHUYLER BRENNAN MD
Psychiatry & Neurology (Psychiatry)
1590 DREW AVE STE 200
DAVIS, CA 95618
Yolo County (855) 501-1004
REBECCA ANN CURRIE LCSW
Social Worker (Clinical)
1590 DREW AVE STE 200
DAVIS, CA 95618
Yolo County (855) 501-1004
DR. BITA J. SHAGHAGHI D.O.
Psychiatry & Neurology (Psychiatry)
1590 DREW AVE STE 200
DAVIS, CA 95618
Yolo County (855) 501-1004

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 Ajay Pal Singh's NPI number?

The NPI number for Ajay Pal Singh is 1689830408. It was assigned to this individual provider in the NPPES registry on July 31, 2008.

Where is Ajay Pal Singh located?

Ajay Pal Singh practices at 1590 Drew Ave Ste 200, Davis, CA 95618. The listed phone number is (530) 297-7500.

What is Ajay Pal Singh's specialty?

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

Is Ajay Pal Singh enrolled in Medicare?

Yes. Ajay Pal Singh 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 Ajay Pal Singh accept?

Health plans from Providence Health Plan list Ajay Pal Singh 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 Ajay Pal Singh was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 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.