What is Freddy Calderon's NPI number?

Freddy Calderon's National Provider Identifier (NPI) is 1932316338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Freddy Calderon's specialty?

Freddy Calderon is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).

Where is Freddy Calderon located?

Freddy Calderon's practice location on file with NPPES is 393 E Walnut St, Pasadena, CA 91188-0001.

What is Freddy Calderon's phone number?

The practice phone number listed in the NPPES registry for Freddy Calderon is (626) 405-7914.

Does Freddy Calderon accept Medicare?

Freddy Calderon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Freddy Calderon's NPI active?

Yes — Freddy Calderon's NPI (1932316338) is active in the NPPES registry as of the last update on 2021-11-29.

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Freddy Calderon, M.D.

NPI 1932316338 · Nephrology Physician · Pasadena, CA

Freddy Calderon, M.D. is a Nephrology Physician provider in Pasadena, CA (NPI 1932316338).

Provider details

NPI number: 1932316338
Entity type: Individual
Primary specialty: Nephrology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: A96401 (CA)

Practice location

393 E Walnut St

3rd Floor Phrs

Pasadena, CA 91188-0001

Phone: (626) 405-7914

Street-level locationGet directions

More CA providers

Mailing address

393 E Walnut St

Pasadena, CA 91188-0001

Specialties & taxonomies

Nephrology PhysicianPrimary207RN0300XLicense A96401 (CA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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 prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Calcitriol	59	25
Furosemide	45	18
Amlodipine Besylate	44	16
Cephalexin	44	31
Fluconazole	43	15
Losartan Potassium	39	15
Potassium Chloride	32	16
Sevelamer Carbonate	31	14
Lisinopril	30	11
Hydralazine Hcl	29	12

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include 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.

Enumerated: 2007-05-16
Last updated: 2021-11-29

Frequently asked questions

What is Freddy Calderon's NPI number?: Freddy Calderon's National Provider Identifier (NPI) is 1932316338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Freddy Calderon's specialty?: Freddy Calderon is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
Where is Freddy Calderon located?: Freddy Calderon's practice location on file with NPPES is 393 E Walnut St, Pasadena, CA 91188-0001.
What is Freddy Calderon's phone number?: The practice phone number listed in the NPPES registry for Freddy Calderon is (626) 405-7914.
Does Freddy Calderon accept Medicare?: Freddy Calderon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Freddy Calderon's NPI active?: Yes — Freddy Calderon's NPI (1932316338) 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.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions