Oscar Bach, PA
NPI 1023632791 · Physician Assistant · Pasadena, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oscar Bach, PA is a Physician Assistant provider in Pasadena, CA (NPI 1023632791).
Provider details
- NPI number
- 1023632791
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- 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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 137 | 73 |
| Silodosin | 85 | 33 |
| Vibegronbrand: Gemtesa | 65 | 25 |
| Cefdinir | 40 | 31 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 35 | 28 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 20 |
| Ciprofloxacin Hcl | 29 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$675 across 26 records (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
Additional practice locations (2)
- 1227 Buena Vista St Ste FDuarte, CA 91010-2486Phone: (877) 254-4496Fax: (877) 254-4496
- 570 Lexington Ave Fl 9New York, NY 10022-6710Phone: (646) 962-7277Fax: (646) 962-1290
Registry dates
- Enumerated
- 2020-05-29
- Last updated
- 2022-11-14
- Certified
- 2022-11-14
Frequently asked questions
- What is Oscar Bach's NPI number?
- Oscar Bach's National Provider Identifier (NPI) is 1023632791, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oscar Bach's specialty?
- Oscar Bach is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Oscar Bach located?
- Oscar Bach's practice location on file with NPPES is 112 N Madison Ave, Pasadena, CA 91101-1710.
- What is Oscar Bach's phone number?
- The practice phone number listed in the NPPES registry for Oscar Bach is (626) 796-8102.
- Does Oscar Bach accept Medicare?
- Oscar Bach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oscar Bach's NPI active?
- Yes — Oscar Bach's NPI (1023632791) is active in the NPPES registry as of the last update on 2022-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.