Katherine Tanaka, M.D.
NPI 1336344878 · Ophthalmology Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Tanaka, M.D. is a Ophthalmology Physician provider in Long Beach, CA (NPI 1336344878).
Provider details
- NPI number
- 1336344878
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G58916 (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
924 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 Problem Focused Exam of Visual System92012 | 206 | $99 |
| Removal of Eyelashes Using Forceps67820 | 163 | $26 |
| Photography of the Retina92250 | 159 | $41 |
| Established Patient Complete Exam of Visual System92014 | 158 | $140 |
| Exam of Visual Field With Extended Testing92083 | 70 | $71 |
| Closure of Tear Duct Opening Using Plug68761 | 56 | $125 |
| Microfluid Analysis of Tears83861 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Cyclosporinebrand: Restasis | 37 |
| Bimatoprostbrand: Lumigan | 27 |
| Dorzolamide/Timolol/Pfbrand: Cosopt Pf | 12 |
| Latanoprost | 12 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (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
- 2007-06-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Katherine Tanaka's NPI number?
- Katherine Tanaka's National Provider Identifier (NPI) is 1336344878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Tanaka's specialty?
- Katherine Tanaka is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Tanaka located?
- Katherine Tanaka's practice location on file with NPPES is 5512 E Britton Dr Ste 200, Long Beach, CA 90815-3149.
- What is Katherine Tanaka's phone number?
- The practice phone number listed in the NPPES registry for Katherine Tanaka is (562) 421-2020.
- Does Katherine Tanaka accept Medicare?
- Katherine Tanaka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Tanaka's NPI active?
- Yes — Katherine Tanaka's NPI (1336344878) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.