David Hirshfield, MD
NPI 1538127402 · Internal Medicine Physician · La Jolla, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Hirshfield, MD is a Internal Medicine Physician provider in La Jolla, CA (NPI 1538127402).
Provider details
- NPI number
- 1538127402
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0057896 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
273 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 | 89 | $137 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 34 | $139 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 28 | $9 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 28 | $21 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 28 | $26 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 25 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 151 | 61 |
| Amlodipine Besylate | 91 | 34 |
| Gabapentin | 77 | 28 |
| Tamsulosin Hcl | 75 | 32 |
| Losartan Potassium | 70 | 28 |
| Rosuvastatin Calcium | 70 | 24 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,303 across 51 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
- 2006-05-02
- Last updated
- 2022-02-03
- Certified
- 2022-02-03
Frequently asked questions
- What is David Hirshfield's NPI number?
- David Hirshfield's National Provider Identifier (NPI) is 1538127402, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Hirshfield's specialty?
- David Hirshfield is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Hirshfield located?
- David Hirshfield's practice location on file with NPPES is 9850 Genesee Ave Ste 320, La Jolla, CA 92037-1208.
- What is David Hirshfield's phone number?
- The practice phone number listed in the NPPES registry for David Hirshfield is (858) 554-1212.
- Does David Hirshfield accept Medicare?
- David Hirshfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Hirshfield's NPI active?
- Yes — David Hirshfield's NPI (1538127402) is active in the NPPES registry as of the last update on 2022-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.