Clark Bach, M.D.
NPI 1831579689 · Internal Medicine Physician · Vista, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Clark Bach, M.D. is a Internal Medicine Physician provider in Vista, CA (NPI 1831579689).
Provider details
- NPI number
- 1831579689
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A155470 (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
11 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
579 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 Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 299 | $137 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 66 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $96 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 39 | $177 |
| Administration of Influenza Virus VaccineG0008 | 31 | $35 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 146 | 52 |
| Amlodipine Besylate | 120 | 48 |
| Levothyroxine Sodium | 119 | 40 |
| Losartan Potassium | 106 | 31 |
| Rosuvastatin Calcium | 104 | 36 |
| Metformin Hclbrand: Metformin Hcl Er | 103 | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$401 across 20 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
Registry dates
- Enumerated
- 2015-06-08
- Last updated
- 2025-06-15
- Certified
- 2025-06-15
Frequently asked questions
- What is Clark Bach's NPI number?
- Clark Bach's National Provider Identifier (NPI) is 1831579689, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clark Bach's specialty?
- Clark Bach is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Clark Bach located?
- Clark Bach's practice location on file with NPPES is 130 Cedar Rd Ste 210, Vista, CA 92083-5102.
- What is Clark Bach's phone number?
- The practice phone number listed in the NPPES registry for Clark Bach is (760) 806-5500.
- Does Clark Bach accept Medicare?
- Clark Bach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Clark Bach's NPI active?
- Yes — Clark Bach's NPI (1831579689) is active in the NPPES registry as of the last update on 2025-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.