John Oh, MD
NPI 1649358730 · Urology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Oh, MD is a Urology Physician provider in Walnut Creek, CA (NPI 1649358730).
Provider details
- NPI number
- 1649358730
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A83004 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 359 | 144 |
| Finasteride | 339 | 106 |
| Terazosin Hcl | 145 | 44 |
| Trospium Chloride | 89 | 28 |
| Cephalexin | 69 | 51 |
| Mirabegronbrand: Myrbetriq | 65 | 20 |
| Ciprofloxacin Hcl | 36 | 31 |
| Tramadol Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$128 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
- 2006-11-02
- Last updated
- 2021-12-09
Frequently asked questions
- What is John Oh's NPI number?
- John Oh's National Provider Identifier (NPI) is 1649358730, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Oh's specialty?
- John Oh is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is John Oh located?
- John Oh's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is John Oh's phone number?
- The practice phone number listed in the NPPES registry for John Oh is (925) 295-4000.
- Does John Oh accept Medicare?
- John Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Oh's NPI active?
- Yes — John Oh's NPI (1649358730) is active in the NPPES registry as of the last update on 2021-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.