2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1639518426 MD
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JUSTIN ELWOOD, MD

Pain Medicine (Anesthesiology) Physician in WATERLOO, 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
1K
Medicare Part D claims · 224 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JUSTIN ELWOOD, MD filed 1,344 Medicare Part D claims in 2023 as a Pain Medicine (Anesthesiology) Physician in WATERLOO, Iowa, prescribing 98% generic.

1K
Part D claims, 2023
98%
generic prescribing
Likely
board-certified (heuristic)

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.

JUSTIN ELWOOD, MD's Medicare Part D volume vs every U.S. prescriber

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

1,344 Top 21% higher than 79% 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%). This entry sits in this band. 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

Board certification likely (heuristic — not verified)

JUSTIN ELWOOD, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JUSTIN ELWOOD, MD?

Quality data not reported

NPI registry status

Active

Issued 06/14/2013

NPI 1639518426

Primary specialty

Pain Medicine (Anesthesiology) Physician

Niche

4,020 US NPIs in this specialty

Medicare Part D claims

1,344 19% vs specialty avg

2023 prescription claims

Specialty avg: 1,657

Specialty distribution in Iowa

How Pain Medicine (Anesthesiology) Physician compares to other specialties among Iowa providers

Iowa providers

Pain Medicine (Anesthesiology) Physician share within Iowa

1. Pain Medicine (Anesthesiology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pain Medicine (Anesthesiology) Physician share within Iowa

Specialty board-certification context

Estimated specialty board-certified rate — Pain Medicine (Anesthesiology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pain Medicine (Anesthesiology) Physician ABMS/AOA estimate

Est. board-certified rate (Pain Medicine (Anesthesiology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pain Medicine (Anesthesiology) Physician) — 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).

JUSTIN ELWOOD, MD appears in the CMS NPPES registry as a Pain Medicine (Anesthesiology) Physician provider holding MD credentials at 2710 SAINT FRANCIS DR STE 419, WATERLOO, IA, 50702, with a listed phone of (319) 272-5000. NPI 1639518426 was issued on 06/14/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ELWOOD 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 1,344 prescription claims written by this provider, covering 224 Medicare beneficiaries and totaling roughly $37K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 40.3%. 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.

Pain Medicine (Anesthesiology) Physician is a narrow specialty nationwide, with 4,020 enrolled providers across 53 states and an average of 1,657 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

2710 SAINT FRANCIS DR STE 419
WATERLOO, IA 50702

Provider Details

NPI 1639518426
Specialty Pain Medicine (Anesthesiology) Physician
Credentials MD
Gender Male
NPI Issued 06/14/2013

Hospital and facility affiliations

Facilities where JUSTIN ELWOOD, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

COVENANT MEDICAL CENTER INC
CEDAR FALLS, IA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

JUSTIN ELWOOD, MD — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 1,344 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.

1,344
Total Claims
$37K
Total Drug Cost
224
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,503
Total Day Supply
40,549
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$9K
Generic Drug Cost
$28K
Opioid Claims
541 (40.3% rate)

Patient Demographics

Average Patient Age
69.6 years
Avg HCC Risk Score
1.52
Gender Split
64% female / 36% male
Age Distribution
<65: 57, 65-74: 104, 75-84: 48, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What JUSTIN ELWOOD, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Gabapentin
326
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
249
Duloxetine Hcl
131
Pregabalin
116
Tramadol Hcl
116
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
112
Tizanidine Hcl
48
Cyclobenzaprine Hcl
30
Baclofen
28
Meloxicam
23

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

Pain Medicine (Anesthesiology) Physician Overview

How JUSTIN ELWOOD, MD fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.

4,020
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider

JUSTIN ELWOOD, MD's 1,344 claims are below the specialty average of 1,657.

Nearby Pain Medicine (Anesthesiology) Physician Providers in Iowa

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

Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JUSTIN ELWOOD, MD's specialty?
JUSTIN ELWOOD, MD specializes in Pain Medicine (Anesthesiology) Physician and practices in WATERLOO, Iowa. Credentials: MD.
How much does JUSTIN ELWOOD, MD prescribe under Medicare Part D?
In 2023, JUSTIN ELWOOD, MD wrote 1,344 Medicare Part D claims totaling $37K in drug costs for 224 beneficiaries.
Where is JUSTIN ELWOOD, MD located?
JUSTIN ELWOOD, MD is located at 2710 SAINT FRANCIS DR STE 419, WATERLOO, IA, 50702. Phone: (319) 272-5000.
What is JUSTIN ELWOOD, MD's NPI number?
JUSTIN ELWOOD, MD's National Provider Identifier (NPI) is 1639518426, issued on 06/14/2013.
Does JUSTIN ELWOOD, MD prescribe more brand-name or generic drugs?
JUSTIN ELWOOD, MD's prescribing is 2% brand-name and 98% generic drugs by claim count, with $9K in brand drug costs.
Does JUSTIN ELWOOD, MD prescribe opioids?
Yes, JUSTIN ELWOOD, MD had 541 opioid claims in 2023 with an opioid prescribing rate of 40.3%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US?
There are 4,020 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does JUSTIN ELWOOD, MD prescribe most often?
Based on 2023 Medicare Part D data, JUSTIN ELWOOD, MD's most frequently prescribed drugs include Gabapentin, Hydrocodone-Acetaminophen, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JUSTIN ELWOOD, MD accept Medicare?
JUSTIN ELWOOD, MD appears in CMS Medicare data with 1,344 Part D claims and 224 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JUSTIN ELWOOD, MD's credentials?
JUSTIN ELWOOD, MD's NPI is 1639518426 with credentials MD. 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