Melissa Ennen, M.D.
NPI 1316134885 · Anesthesiology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Ennen, M.D. is a Anesthesiology Physician provider in Walnut Creek, CA (NPI 1316134885).
Provider details
- NPI number
- 1316134885
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A95735 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
158 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) |
|---|---|---|
| Injection of Anesthetic Agent And/Or Steroid Into Arm Nerve Bundle (brachial Plexus)64415 | 51 | $75 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 45 | $130 |
| Anesthesia for Other Procedure on Top of Arm Bone and Shoulder Joint01630 | 32 | $263 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 17 | $67 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 13 | $351 |
Typical Medicare-allowed amounts for these services range $67–$351 (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
Additional practice locations (1)
- 365 Lennon Ln Ste 250Walnut Creek, CA 94598-5915Phone: (925) 932-6330Fax: (925) 932-0139
Registry dates
- Enumerated
- 2007-09-28
- Last updated
- 2018-06-21
Frequently asked questions
- What is Melissa Ennen's NPI number?
- Melissa Ennen's National Provider Identifier (NPI) is 1316134885, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Ennen's specialty?
- Melissa Ennen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Ennen located?
- Melissa Ennen's practice location on file with NPPES is 2637 Shadelands Dr, Walnut Creek, CA 94598-2512.
- What is Melissa Ennen's phone number?
- The practice phone number listed in the NPPES registry for Melissa Ennen is (925) 932-6330.
- Does Melissa Ennen accept Medicare?
- Melissa Ennen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Ennen's NPI active?
- Yes — Melissa Ennen's NPI (1316134885) is active in the NPPES registry as of the last update on 2018-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.