Alan Hasegawa, MD
NPI 1639149818 · Psychiatry Physician · Tulsa, OK
Alan Hasegawa, MD is a Psychiatry Physician provider in Tulsa, OK (NPI 1639149818).
Provider details
- NPI number
- 1639149818
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 17409 (OK)
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
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
83 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 83 | $117 |
Typical Medicare-allowed amounts for these services range $117–$117 (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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 173 | 92 |
| Duloxetine Hcl | 109 | 42 |
| Lamotrigine | 98 | 42 |
| Clonazepam | 89 | 44 |
| Trazodone Hcl | 85 | 42 |
| Quetiapine Fumarate | 85 | 30 |
| Fluoxetine Hcl | 68 | 28 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-23
- Last updated
- 2017-01-31
Frequently asked questions
- What is Alan Hasegawa's NPI number?
- Alan Hasegawa's National Provider Identifier (NPI) is 1639149818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Hasegawa's specialty?
- Alan Hasegawa is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Hasegawa located?
- Alan Hasegawa's practice location on file with NPPES is 6655 S Yale Ave, Tulsa, OK 74136-3326.
- What is Alan Hasegawa's phone number?
- The practice phone number listed in the NPPES registry for Alan Hasegawa is (918) 491-5051.
- Is Alan Hasegawa's NPI active?
- Yes — Alan Hasegawa's NPI (1639149818) is active in the NPPES registry as of the last update on 2017-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.