Jack Oh, D.D.S.
NPI 1609844505 · General Practice Dentistry · Diamond Bar, CA
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Oh, D.D.S. is a General Practice Dentistry provider in Diamond Bar, CA (NPI 1609844505).
Provider details
- NPI number
- 1609844505
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- No
- License
- 42205 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 106 | 78 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 38 | 36 |
| Azithromycin | 15 | 11 |
| Chlorhexidine Gluconate | 13 | 11 |
| Ibuprofen | 13 | 12 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 11 | 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 , 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-08
- Last updated
- 2014-04-22
Frequently asked questions
- What is Jack Oh's NPI number?
- Jack Oh's National Provider Identifier (NPI) is 1609844505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Oh's specialty?
- Jack Oh is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Jack Oh located?
- Jack Oh's practice location on file with NPPES is 2705 S Diamond Bar Blvd, Diamond Bar, CA 91765-3512.
- What is Jack Oh's phone number?
- The practice phone number listed in the NPPES registry for Jack Oh is (909) 444-9400.
- Does Jack Oh accept Medicare?
- Jack Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Oh's NPI active?
- Yes — Jack Oh's NPI (1609844505) is active in the NPPES registry as of the last update on 2014-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.