Joel Clarfield, M.D.
NPI 1700941788 · Internal Medicine Physician · Mission Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joel Clarfield, M.D. is a Internal Medicine Physician provider in Mission Hills, CA (NPI 1700941788).
Provider details
- NPI number
- 1700941788
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A30778 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,017 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 561 | $138 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 406 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 285 | $16 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 127 | $114 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 123 | $194 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 141 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 555 | 100 |
| Levothyroxine Sodium | 313 | 52 |
| Losartan Potassium | 269 | 42 |
| Omeprazole | 253 | 43 |
| Furosemide | 227 | 38 |
| Metformin Hcl | 210 | 43 |
| Gabapentin | 199 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joel Clarfield's NPI number?
- Joel Clarfield's National Provider Identifier (NPI) is 1700941788, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joel Clarfield's specialty?
- Joel Clarfield is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joel Clarfield located?
- Joel Clarfield's practice location on file with NPPES is 11550 Indian Hills Rd, Mission Hills, CA 91345-1200.
- What is Joel Clarfield's phone number?
- The practice phone number listed in the NPPES registry for Joel Clarfield is (818) 838-2200.
- Does Joel Clarfield accept Medicare?
- Joel Clarfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joel Clarfield's NPI active?
- Yes — Joel Clarfield's NPI (1700941788) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.