Thomas Grayden, MD
NPI 1700942117 · Psychiatry Physician · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Grayden, MD is a Psychiatry Physician provider in Costa Mesa, CA (NPI 1700942117).
Provider details
- NPI number
- 1700942117
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 67316 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$153 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 750 E Thunderbird Rd Ste 1-3Phoenix, AZ 85022-5306Phone: (602) 230-7373Fax: (602) 218-6383
- 9741 N 90th Pl Ste 200Scottsdale, AZ 85258-5065Phone: (480) 237-9776
Registry dates
- Enumerated
- 2006-12-29
- Last updated
- 2025-08-15
- Certified
- 2025-08-15
Frequently asked questions
- What is Thomas Grayden's NPI number?
- Thomas Grayden's National Provider Identifier (NPI) is 1700942117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Grayden's specialty?
- Thomas Grayden is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Grayden located?
- Thomas Grayden's practice location on file with NPPES is 3151 Airway Ave Ste G1, Costa Mesa, CA 92626-4624.
- What is Thomas Grayden's phone number?
- The practice phone number listed in the NPPES registry for Thomas Grayden is (714) 545-5550.
- Does Thomas Grayden accept Medicare?
- Thomas Grayden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Grayden's NPI active?
- Yes — Thomas Grayden's NPI (1700942117) is active in the NPPES registry as of the last update on 2025-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.