Mehera Halliwell, M.D.
NPI 1366579138 · Psychiatry Physician · Granada Hills, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mehera Halliwell, M.D. is a Psychiatry Physician provider in Granada Hills, CA (NPI 1366579138).
Provider details
- NPI number
- 1366579138
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A90555 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
106 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 106 | $193 |
Typical Medicare-allowed amounts for these services range $193–$193 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bupropion Hclbrand: Bupropion Xl | 119 | 11 |
| Gabapentin | 81 | 12 |
| Propranolol Hcl | 76 | — |
| Aripiprazole | 73 | — |
| Fluoxetine Hcl | 71 | — |
| Lamotrigine | 64 | — |
| Trazodone Hcl | 56 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,959 across 80 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
Registry dates
- Enumerated
- 2007-02-27
- Last updated
- 2009-01-30
Frequently asked questions
- What is Mehera Halliwell's NPI number?
- Mehera Halliwell's National Provider Identifier (NPI) is 1366579138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mehera Halliwell's specialty?
- Mehera Halliwell is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mehera Halliwell located?
- Mehera Halliwell's practice location on file with NPPES is 10605 Balboa Blvd, Granada Hills, CA 91344-6342.
- What is Mehera Halliwell's phone number?
- The practice phone number listed in the NPPES registry for Mehera Halliwell is (818) 832-2400.
- Does Mehera Halliwell accept Medicare?
- Mehera Halliwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mehera Halliwell's NPI active?
- Yes — Mehera Halliwell's NPI (1366579138) is active in the NPPES registry as of the last update on 2009-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.