What is Kathryn Calderwood's NPI number?

Kathryn Calderwood's National Provider Identifier (NPI) is 1255825089, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Kathryn Calderwood's specialty?

Kathryn Calderwood is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Kathryn Calderwood located?

Kathryn Calderwood's practice location on file with NPPES is 500 W 144th Ave Ste 130, Westminster, CO 80023-9326.

What is Kathryn Calderwood's phone number?

The practice phone number listed in the NPPES registry for Kathryn Calderwood is (303) 649-3800.

Does Kathryn Calderwood accept Medicare?

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

Is Kathryn Calderwood's NPI active?

Yes — Kathryn Calderwood's NPI (1255825089) is active in the NPPES registry as of the last update on 2025-03-02.

IndividualActiveAccepts Medicare

Kathryn Calderwood, PA-C

NPI 1255825089 · Physician Assistant · Westminster, CO

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

Kathryn Calderwood, PA-C is a Physician Assistant provider in Westminster, CO (NPI 1255825089).

Provider details

NPI number: 1255825089
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA-C
Sex: Female
Sole proprietor: No
License: PA0005435 (CO)

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA0005435 (CO)
Physician Assistants & Advanced Practice Nursing Providers
Surgical Physician Assistant363AS0400XLicense PA.0005435 (CO)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Detailed profile(80/100 index)

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

Registry tenure33% of score
8 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
5 documented practice locations
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

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 · 3 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Tramadol Hcl	40	40
Oxycodone Hcl	39	37
Methocarbamol	35	35

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.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$766 across 8 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

500 W 144th Ave Ste 130

Westminster, CO 80023-9326

Phone: (303) 649-3800

Fax: (303) 649-3819

Street-level locationGet directions

More CO providers

Mailing address