2026 NPPES data Rheumatology Physician NPI 1871608091 MD
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Kristin Harts, MD

Rheumatology Physician in Urbandale, Iowa. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,181 in Rheumatology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 160 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Kristin Harts, MD filed 1,130 Medicare Part D claims in 2023 as a Rheumatology Physician in Urbandale, Iowa, prescribing 90% generic.

1K
Part D claims, 2023
90%
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.

Kristin Harts, MD's Medicare Part D volume vs every U.S. prescriber

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

1,130 Top 23% higher than 77% 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%). This entry sits in this band. 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. 2K+: 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)

Kristin Harts, 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 Kristin Harts, MD?

Quality data not reported

NPI registry status

Active

Issued 08/20/2006

NPI 1871608091

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

1,130 45% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Iowa

How Rheumatology Physician compares to other specialties among Iowa providers

Iowa providers

Largest specialties in Iowa (% of in-state providers)

Pharmacist - 6.6%Pharmacist6.6%Physical Therapist - 5.5%Physical Therapist5.5%Mental Health Counselor - 5%Mental Health Counselor5%Family Medicine Physician - 4.8%Family Medicine Physician4.8%Chiropractor - 4.2%Chiropractor4.2%Clinical Social Worker - 4.1%Clinical Social Worker4.1%Rheumatology Physician - 0.1%Rheumatology Physician0.1%
Largest specialties in Iowa (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Rheumatology Physician. Verify directly:

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).

Kristin Harts, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 8421 PLUM DR, Urbandale, IA, 50322, with a listed phone of (515) 270-7222. NPI 1871608091 was issued on 08/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Harts 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 1,130 prescription claims written by this provider, covering 160 Medicare beneficiaries and totaling roughly $575K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 23.3%. 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.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

8421 PLUM DR
Urbandale, IA 50322

Provider Details

NPI 1871608091
Specialty Rheumatology Physician
Credentials MD
Gender Female
NPI Issued 08/20/2006

Hospital and facility affiliations

Facilities where Kristin Harts, 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.

Iowa Arthritis And Osteoporosis Center PC
Urbandale, 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 · Typical

Kristin Harts, MD - brand share 10.0%
Rheumatology Physician average

10% brand-name claims vs 90% generic, on 1,130 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.

1,130
Total Claims
$575K
Total Drug Cost
160
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,010
Total Day Supply
57,953
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$544K
Generic Drug Cost
$31K
Opioid Claims
263 (23.3% rate)

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
1.34
Gender Split
85% female / 15% male
Age Distribution
<65: 14, 65-74: 76, 75-84: 55, 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 Kristin Harts, 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
Prednisone
195
Methotrexate
Methotrexate Sodium
177
Tramadol Hcl
130
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
110
Leflunomide
70
Hydroxychloroquine Sulfate
61
Alendronate Sodium
56
Sulfasalazine
33
Azathioprine
25
Allopurinol
22

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

Rheumatology Physician Overview

How Kristin Harts, MD fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

Kristin Harts, MD's 1,130 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Iowa

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

Compare Rheumatology Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Iowa medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Rheumatology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Kristin Harts, MD's specialty?
Kristin Harts, MD specializes in Rheumatology Physician and practices in Urbandale, Iowa. Credentials: MD.
How much does Kristin Harts, MD prescribe under Medicare Part D?
In 2023, Kristin Harts, MD wrote 1,130 Medicare Part D claims totaling $575K in drug costs for 160 beneficiaries.
Where is Kristin Harts, MD located?
Kristin Harts, MD is located at 8421 PLUM DR, Urbandale, IA, 50322. Phone: (515) 270-7222.
What is Kristin Harts, MD's NPI number?
Kristin Harts, MD's National Provider Identifier (NPI) is 1871608091, issued on 08/20/2006.
Does Kristin Harts, MD prescribe more brand-name or generic drugs?
Kristin Harts, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $544K in brand drug costs.
Does Kristin Harts, MD prescribe opioids?
Yes, Kristin Harts, MD had 263 opioid claims in 2023 with an opioid prescribing rate of 23.3%.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Kristin Harts, MD prescribe most often?
Based on 2023 Medicare Part D data, Kristin Harts, MD's most frequently prescribed drugs include Prednisone, Methotrexate, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kristin Harts, MD accept Medicare?
Kristin Harts, MD appears in CMS Medicare data with 1,130 Part D claims and 160 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kristin Harts, MD's credentials?
Kristin Harts, MD's NPI is 1871608091 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

Compiled from official public sources by the PlainDoctor editorial team.