Theingi Oo, MD
NPI 1366637407 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theingi Oo, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1366637407).
Provider details
- NPI number
- 1366637407
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A104545 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,870 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,679 | $114 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 191 | $166 |
Typical Medicare-allowed amounts for these services range $114–$166 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ertapenem Sodiumbrand: Ertapenem | 35 | 12 |
| Meropenem | 27 | — |
| Ceftriaxone Sodiumbrand: Ceftriaxone | 22 | — |
| Levofloxacin | 20 | 20 |
| Linezolid | 19 | 18 |
| Metronidazole | 18 | 18 |
| Ciprofloxacin Hcl | 13 | 13 |
| Daptomycin | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-12
- Last updated
- 2016-07-26
Frequently asked questions
- What is Theingi Oo's NPI number?
- Theingi Oo's National Provider Identifier (NPI) is 1366637407, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theingi Oo's specialty?
- Theingi Oo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Theingi Oo located?
- Theingi Oo's practice location on file with NPPES is 1300 N Vermont Ave, Los Angeles, CA 90027-6005.
- What is Theingi Oo's phone number?
- The practice phone number listed in the NPPES registry for Theingi Oo is (323) 662-0492.
- Does Theingi Oo accept Medicare?
- Theingi Oo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theingi Oo's NPI active?
- Yes — Theingi Oo's NPI (1366637407) is active in the NPPES registry as of the last update on 2016-07-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.