2026 NPPES data Ambulatory Care Pharmacist NPI 1881315935 PHARMACIST
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DAVID KNIGHTES, PHARMACIST

Ambulatory Care Pharmacist in PHOENIX, Arizona. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
73
Medicare Part D claims · 66 beneficiaries · Ambulatory Care Pharmacist avg: 492
Generic prescribing
0%
generic claims · 100% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

DAVID KNIGHTES, PHARMACIST filed 73 Medicare Part D claims in 2023 as a Ambulatory Care Pharmacist in PHOENIX, Arizona, prescribing 0% generic.

73
Part D claims, 2023
0%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

DAVID KNIGHTES, PHARMACIST's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

73 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about DAVID KNIGHTES, PHARMACIST?

Quality data not reported

NPI registry status

Active

Issued 09/07/2022

NPI 1881315935

Primary specialty

Ambulatory Care Pharmacist

Niche

3,473 US NPIs in this specialty

Medicare Part D claims

73 85% vs specialty avg

2023 prescription claims

Specialty avg: 492

Specialty distribution in Arizona

How Ambulatory Care Pharmacist compares to other specialties among Arizona providers

Arizona providers

Ambulatory Care Pharmacist share within Arizona

1. Ambulatory Care Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ambulatory Care Pharmacist share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Ambulatory Care Pharmacist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ambulatory Care Pharmacist ABMS/AOA estimate

Est. board-certified rate (Ambulatory Care Pharmacist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ambulatory Care Pharmacist) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

DAVID KNIGHTES, PHARMACIST is a Ambulatory Care Pharmacist provider practicing in PHOENIX, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PHARMACIST. NPI: 1881315935. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

DAVID KNIGHTES, PHARMACIST appears in the CMS NPPES registry as a Ambulatory Care Pharmacist provider holding PHARMACIST credentials at 3450 W DUNLAP AVE, PHOENIX, AZ, 85051, with a listed phone of (602) 973-0971. NPI 1881315935 was issued on 09/07/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KNIGHTES most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 73 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $19K in drug spend, split 100% brand-name and 0% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Ambulatory Care Pharmacist is a narrow specialty nationwide, with 3,473 enrolled providers across 52 states and an average of 492 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

3450 W DUNLAP AVE
PHOENIX, AZ 85051

Provider Details

NPI 1881315935
Specialty Ambulatory Care Pharmacist
Credentials PHARMACIST
Gender Male
NPI Issued 09/07/2022

Brand vs generic prescribing mix · Brand-heavy

DAVID KNIGHTES, PHARMACIST — brand share 100.0%
Specialty average (est.)

100% brand-name claims vs 0% generic, on 73 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

73
Total Claims
$19K
Total Drug Cost
66
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
73
Total Day Supply
73
Brand vs Generic
100% brand / 0% generic
Brand Drug Cost
$19K
Generic Drug Cost
$0

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.65
Gender Split
62% female / 38% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Shingrix
Varicella-Zoster Ge/As01b/Pf
34
Arexvy
Rsvpref3 Antigen/As01e/Pf
31

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Ambulatory Care Pharmacist Overview

How DAVID KNIGHTES, PHARMACIST fits within the Ambulatory Care Pharmacist landscape nationally.

3,473
Ambulatory Care Pharmacist Providers in US
52
States with Ambulatory Care Pharmacist
492
Avg Claims per Provider

DAVID KNIGHTES, PHARMACIST's 73 claims are below the specialty average of 492.

Nearby Ambulatory Care Pharmacist Providers in Arizona

Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as KNIGHTES.

Compare Ambulatory Care Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is DAVID KNIGHTES, PHARMACIST's specialty?
DAVID KNIGHTES, PHARMACIST specializes in Ambulatory Care Pharmacist and practices in PHOENIX, Arizona. Credentials: PHARMACIST.
How much does DAVID KNIGHTES, PHARMACIST prescribe under Medicare Part D?
In 2023, DAVID KNIGHTES, PHARMACIST wrote 73 Medicare Part D claims totaling $19K in drug costs for 66 beneficiaries.
Where is DAVID KNIGHTES, PHARMACIST located?
DAVID KNIGHTES, PHARMACIST is located at 3450 W DUNLAP AVE, PHOENIX, AZ, 85051. Phone: (602) 973-0971.
What is DAVID KNIGHTES, PHARMACIST's NPI number?
DAVID KNIGHTES, PHARMACIST's National Provider Identifier (NPI) is 1881315935, issued on 09/07/2022.
Does DAVID KNIGHTES, PHARMACIST prescribe more brand-name or generic drugs?
DAVID KNIGHTES, PHARMACIST's prescribing is 100% brand-name and 0% generic drugs by claim count, with $19K in brand drug costs.
How many Ambulatory Care Pharmacist providers are there in the US?
There are 3,473 Ambulatory Care Pharmacist providers across 52 states in the US. The average Ambulatory Care Pharmacist provider writes 492 Medicare Part D claims per year.
What drugs does DAVID KNIGHTES, PHARMACIST prescribe most often?
Based on 2023 Medicare Part D data, DAVID KNIGHTES, PHARMACIST's most frequently prescribed drugs include Shingrix, Arexvy. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID KNIGHTES, PHARMACIST accept Medicare?
DAVID KNIGHTES, PHARMACIST appears in CMS Medicare data with 73 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID KNIGHTES, PHARMACIST's credentials?
DAVID KNIGHTES, PHARMACIST's NPI is 1881315935 with credentials PHARMACIST. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology