Diane Layman, CRNA
NPI 1649220005 · Certified Registered Nurse Anesthetist · Fairfield, CA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Layman, CRNA is a Certified Registered Nurse Anesthetist provider in Fairfield, CA (NPI 1649220005).
Provider details
- NPI number
- 1649220005
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Female
- Sole proprietor
- Yes
- License
- 51820 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
177 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Procedure on Anus and Rectum00902 | 103 | $61 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 38 | $60 |
| Anesthesia for Fragmenting, Manipulation And/Or Removal of Kidney Stone Including Use of an Endoscope00918 | 21 | $107 |
| Anesthesia for Removal of Urinary Bladder Tumors Including Use of an Endoscope00912 | 15 | $89 |
Typical Medicare-allowed amounts for these services range $60–$107 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-10
- Last updated
- 2019-09-27
Frequently asked questions
- What is Diane Layman's NPI number?
- Diane Layman's National Provider Identifier (NPI) is 1649220005, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Layman's specialty?
- Diane Layman is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Diane Layman located?
- Diane Layman's practice location on file with NPPES is 101 Bodin Circle Travis Afb, Fairfield, CA 94535.
- What is Diane Layman's phone number?
- The practice phone number listed in the NPPES registry for Diane Layman is (707) 423-7948.
- Does Diane Layman accept Medicare?
- Diane Layman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Layman's NPI active?
- Yes — Diane Layman's NPI (1649220005) is active in the NPPES registry as of the last update on 2019-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.