Paymon Mesgarzadeh, M.D.
NPI 1023216892 · Cardiovascular Disease Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Paymon Mesgarzadeh, M.D. is a Cardiovascular Disease Physician provider in Fontana, CA (NPI 1023216892).
Provider details
- NPI number
- 1023216892
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A109433 (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
18 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
14 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 14 | $68 |
Typical Medicare-allowed amounts for these services range $68–$68 (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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bisoprolol Fumarate | 235 | 95 |
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 200 | 80 |
| Amiodarone Hcl | 155 | 67 |
| Carvedilol | 149 | 57 |
| Dofetilide | 123 | 32 |
| Furosemide | 92 | 48 |
| Losartan Potassium | 90 | 35 |
| Potassium Chloride | 82 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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
- 2007-07-03
- Last updated
- 2021-11-29
Frequently asked questions
- What is Paymon Mesgarzadeh's NPI number?
- Paymon Mesgarzadeh's National Provider Identifier (NPI) is 1023216892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paymon Mesgarzadeh's specialty?
- Paymon Mesgarzadeh is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Paymon Mesgarzadeh located?
- Paymon Mesgarzadeh's practice location on file with NPPES is 9985 Sierra Ave, Fontana, CA 92335-6720.
- What is Paymon Mesgarzadeh's phone number?
- The practice phone number listed in the NPPES registry for Paymon Mesgarzadeh is (909) 427-5000.
- Does Paymon Mesgarzadeh accept Medicare?
- Paymon Mesgarzadeh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Paymon Mesgarzadeh's NPI active?
- Yes — Paymon Mesgarzadeh's NPI (1023216892) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.