2026 NPPES data Pharmacist NPI 1710265657 RPH
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PHILIP OSTREM, RPH

Pharmacist in WASHINGTON, Iowa. 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
4K
Medicare Part D claims · 3K beneficiaries · Pharmacist avg: 135
Generic prescribing
0%
generic claims · 100% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

PHILIP OSTREM, RPH filed 3,932 Medicare Part D claims in 2023 as a Pharmacist in WASHINGTON, Iowa, prescribing 0% generic.

4K
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.

PHILIP OSTREM, RPH's Medicare Part D volume vs every U.S. prescriber

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

3,932 Top 9% higher than 91% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 PHILIP OSTREM, RPH?

Quality data not reported

NPI registry status

Active

Issued 07/26/2011

NPI 1710265657

Primary specialty

Pharmacist

High-volume

290,447 US NPIs in this specialty

Medicare Part D claims

3,932 2813% vs specialty avg

2023 prescription claims

Specialty avg: 135

Specialty distribution in Iowa

How Pharmacist compares to other specialties among Iowa providers

Iowa providers

Pharmacist share within Iowa

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

PHILIP OSTREM, RPH appears in the CMS NPPES registry as a Pharmacist provider holding RPH credentials at 1010 W MADISON ST, WASHINGTON, IA, 52353, with a listed phone of (319) 331-2552. NPI 1710265657 was issued on 07/26/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OSTREM 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 3,932 prescription claims written by this provider, covering 3,193 Medicare beneficiaries and totaling roughly $1.1 million 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.

Pharmacist is a high-volume specialty nationwide, with 290,447 enrolled providers across 56 states and an average of 135 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

1010 W MADISON ST
WASHINGTON, IA 52353

Provider Details

NPI 1710265657
Specialty Pharmacist
Credentials RPH
Gender Male
NPI Issued 07/26/2011

Brand vs generic prescribing mix · Brand-heavy

PHILIP OSTREM, RPH — brand share 100.0%
Specialty average (est.)

100% brand-name claims vs 0% generic, on 3,932 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.

3,932
Total Claims
$1.1M
Total Drug Cost
3,193
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,932
Total Day Supply
3,932
Brand vs Generic
100% brand / 0% generic
Brand Drug Cost
$1.1M
Generic Drug Cost
$0

Patient Demographics

Average Patient Age
81.2 years
Avg HCC Risk Score
1.93
Gender Split
67% female / 33% male
Age Distribution
<65: 158, 65-74: 720, 75-84: 979, 85+: 1,336

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Arexvy
Rsvpref3 Antigen/As01e/Pf
2,322
Shingrix
Varicella-Zoster Ge/As01b/Pf
1,205
Abrysvo
"Rsv Vacc
N/A

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

Pharmacist Overview

How PHILIP OSTREM, RPH fits within the Pharmacist landscape nationally.

290,447
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider

PHILIP OSTREM, RPH's 3,932 claims are above the specialty average of 135.

Nearby Pharmacist Providers in Iowa

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

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

Frequently Asked Questions

What is PHILIP OSTREM, RPH's specialty?
PHILIP OSTREM, RPH specializes in Pharmacist and practices in WASHINGTON, Iowa. Credentials: RPH.
How much does PHILIP OSTREM, RPH prescribe under Medicare Part D?
In 2023, PHILIP OSTREM, RPH wrote 3,932 Medicare Part D claims totaling $1.1M in drug costs for 3,193 beneficiaries.
Where is PHILIP OSTREM, RPH located?
PHILIP OSTREM, RPH is located at 1010 W MADISON ST, WASHINGTON, IA, 52353. Phone: (319) 331-2552.
What is PHILIP OSTREM, RPH's NPI number?
PHILIP OSTREM, RPH's National Provider Identifier (NPI) is 1710265657, issued on 07/26/2011.
Does PHILIP OSTREM, RPH prescribe more brand-name or generic drugs?
PHILIP OSTREM, RPH's prescribing is 100% brand-name and 0% generic drugs by claim count, with $1.1M in brand drug costs.
How many Pharmacist providers are there in the US?
There are 290,447 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does PHILIP OSTREM, RPH prescribe most often?
Based on 2023 Medicare Part D data, PHILIP OSTREM, RPH's most frequently prescribed drugs include Arexvy, Shingrix, Abrysvo. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PHILIP OSTREM, RPH accept Medicare?
PHILIP OSTREM, RPH appears in CMS Medicare data with 3,932 Part D claims and 3,193 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PHILIP OSTREM, RPH's credentials?
PHILIP OSTREM, RPH's NPI is 1710265657 with credentials RPH. 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