2026 NPPES data Rheumatology Physician NPI 1356461024 MD
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Tim Bongartz, MD

Rheumatology Physician in Nashville, Tennessee. 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
35
Medicare Part D claims · 22 beneficiaries · Rheumatology Physician avg: 2K
MIPS score
97.1/100
▲ 14 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Tim Bongartz, MD reported a CMS MIPS final score of 97.1/100 - above the 83.1 national average - and filed 35 Medicare Part D claims in 2023.

97.1/100
MIPS score · +14 vs avg
35
Part D claims, 2023
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.

Tim Bongartz, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

97 Top 15% higher than 85% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Where Tim Bongartz, MD sits

This provider among rheumatology physician peers

Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Tim Bongartz, MD writes more Part D claims than 1% of them and scores higher on MIPS quality than 86% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 72Tim Bongartz, MD-Part D claim volume, percentile in specialty: 1 · MIPS quality, percentile: 86
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one rheumatology physician peer from a representative sample of 60; the gold marker is Tim Bongartz, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Tim Bongartz, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Tim Bongartz, MD?

High performer (top quartile)

NPI registry status

Active

Issued 03/29/2007

NPI 1356461024

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

35 98% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

MIPS final score

97.1/100 14 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Tennessee

How Rheumatology Physician compares to other specialties among Tennessee providers

Tennessee providers

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

Family Nurse Practitioner - 6.4%Family Nurse Practitioner6.4%Pharmacist - 5.9%Pharmacist5.9%Student in an Organized Health Care Education/Training Program - 4.6%Student in an Organized Health Care Education/Training Program4.6%Physical Therapist - 4.2%Physical Therapist4.2%Behavior Technician - 4.2%Behavior Technician4.2%Registered Nurse - 3.9%Registered Nurse3.9%Rheumatology Physician - 0.1%Rheumatology Physician0.1%
Largest specialties in Tennessee (% of in-state providers)

Medicare quality performance, MIPS

Tim Bongartz, MD's 2023 MIPS final score plotted against the Rheumatology Physician national average

High performer (top quartile)
MIPS Final Score
97.1/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Rheumatology Physician) - 97.1/100 vs national avg 83.1

0%100%National avg83%97.1%
MIPS final score (Rheumatology Physician) - 97.1/100 vs national avg 83.1

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).

Tim Bongartz, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 3601 THE VANDERBILT CLINIC, Nashville, TN, 37232, with a listed phone of (615) 936-2000. NPI 1356461024 was issued on 03/29/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Bongartz 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 35 prescription claims written by this provider, covering 22 Medicare beneficiaries and totaling roughly $555 in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 97.1/100 for the 2023 performance year (Quality 85.6), compared with the national average of 83.1.

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

3601 THE VANDERBILT CLINIC
Nashville, TN 37232

Provider Details

NPI 1356461024
Specialty Rheumatology Physician
Credentials MD
Gender Male
NPI Issued 03/29/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

97.1279
Final Score
Avg: 83.1
85.6458
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Tim Bongartz, 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.

Vanderbilt University Medical Center
★★★★★ 5/5
Nashville, TN
Acute Care Hospitals
CMS CCN: 440039

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

Medicare Part D Prescribing Data

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

35
Total Claims
$555
Total Drug Cost
22
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
43
Total Day Supply
840
Generic Drug Cost
$520
Antibiotic Claims
13

Patient Demographics

Average Patient Age
67.7 years
Avg HCC Risk Score
2.39
Gender Split
50% female / 50% male

Rheumatology Physician Overview

How Tim Bongartz, 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

Tim Bongartz, MD's 35 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Tennessee

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

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 Tennessee 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 Tim Bongartz, MD's specialty?
Tim Bongartz, MD specializes in Rheumatology Physician and practices in Nashville, Tennessee. Credentials: MD.
How much does Tim Bongartz, MD prescribe under Medicare Part D?
In 2023, Tim Bongartz, MD wrote 35 Medicare Part D claims totaling $555 in drug costs for 22 beneficiaries.
What is Tim Bongartz, MD's Medicare quality score?
Tim Bongartz, MD has a CMS MIPS Final Score of 97.1/100 (Quality: 85.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Tim Bongartz, MD located?
Tim Bongartz, MD is located at 3601 THE VANDERBILT CLINIC, Nashville, TN, 37232. Phone: (615) 936-2000.
What is Tim Bongartz, MD's NPI number?
Tim Bongartz, MD's National Provider Identifier (NPI) is 1356461024, issued on 03/29/2007.
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.
Does Tim Bongartz, MD accept Medicare?
Tim Bongartz, MD appears in CMS Medicare data with 35 Part D claims and 22 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tim Bongartz, MD's credentials?
Tim Bongartz, MD's NPI is 1356461024 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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.