Derek Phan, MD
NPI 1598184244 · Cardiovascular Disease Physician · Temescal Valley, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Phan, MD is a Cardiovascular Disease Physician provider in Temescal Valley, CA (NPI 1598184244).
Provider details
- NPI number
- 1598184244
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD61123756 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- Interventional Cardiology Physician207RI0011X
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
27 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) |
|---|---|---|
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 14 | $11 |
| Insertion of Tube in Left Lower Heart Chamber and Coronary Artery for Diagnosis With Review By Radiologist93458 | 13 | $228 |
Typical Medicare-allowed amounts for these services range $11–$228 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 53 | 20 |
| Ticagrelorbrand: Brilinta | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (3)
- 800 S Main StCorona, CA 92882-3420Phone: (213) 569-1450
- 4733 W Sunset BlvdLos Angeles, CA 90027-6021Phone: (237) 834-0113
- 1818 N Meade StAppleton, WI 54911-3454Phone: (920) 731-8900Fax: (920) 738-5369
Registry dates
- Enumerated
- 2014-04-09
- Last updated
- 2023-07-31
- Certified
- 2023-07-31
Frequently asked questions
- What is Derek Phan's NPI number?
- Derek Phan's National Provider Identifier (NPI) is 1598184244, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Phan's specialty?
- Derek Phan is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Phan located?
- Derek Phan's practice location on file with NPPES is 21634 Retreat Pkwy, Temescal Valley, CA 92883-6100.
- What is Derek Phan's phone number?
- The practice phone number listed in the NPPES registry for Derek Phan is (951) 493-6650.
- Does Derek Phan accept Medicare?
- Derek Phan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Phan's NPI active?
- Yes — Derek Phan's NPI (1598184244) is active in the NPPES registry as of the last update on 2023-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.