2026 NPPES data Family Medicine Physician NPI 1639174915 MD
Verify on CMS →

JOANNE TOLLERTON, MD

Family Medicine Physician in CHINLE, 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
1K
Medicare Part D claims · 165 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.2432/100
▲ 1 pts above national avg 83.1 · [object Object]

What the federal data shows

JOANNE TOLLERTON, MD reported a CMS MIPS final score of 84.2432/100 — above the 83.1 national average — and filed 1,100 Medicare Part D claims in 2023.

84.2432/100
MIPS score · +1 vs avg
1K
Part D claims, 2023
84%
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.

JOANNE TOLLERTON, MD's MIPS score vs every scored U.S. clinician

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

84 45th percentile higher than 45% 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%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. 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

Board certification likely (heuristic — not verified)

JOANNE TOLLERTON, 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 JOANNE TOLLERTON, MD?

Near national average

NPI registry status

Active

Issued 06/14/2005

NPI 1639174915

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

1,100 68% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

84.2432/100 1.1432000000000073% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Arizona

How Family Medicine Physician compares to other specialties among Arizona providers

Arizona providers

Family Medicine Physician share within Arizona

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within Arizona

Medicare quality performance — MIPS

JOANNE TOLLERTON, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average

Near national average
MIPS Final Score
84.2432/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) — 84.2432/100 vs national avg 83.1

0%100%National avg83%84.2%
MIPS final score (Family Medicine Physician) — 84.2432/100 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).

JOANNE TOLLERTON, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at U.S. 191 & HOSPITAL DRIVE, CHINLE, AZ, 86503, with a listed phone of (928) 674-7001. NPI 1639174915 was issued on 06/14/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what TOLLERTON 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 1,100 prescription claims written by this provider, covering 165 Medicare beneficiaries and totaling roughly $86K in drug spend, split 16% brand-name and 84% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 84.2432/100 for the 2023 performance year (Quality 64.91, Cost 67.5672), compared with the national average of 83.1.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

U.S. 191 & HOSPITAL DRIVE
CHINLE, AZ 86503

Provider Details

NPI 1639174915
Specialty Family Medicine Physician
Credentials MD
Gender Female
NPI Issued 06/14/2005

CMS Quality Score (MIPS)

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

84.2432
Final Score
Avg: 83.1
64.91
Quality
67.5672
Cost
98
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where JOANNE TOLLERTON, 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.

DHHS PHS NAIHS CHINLE COMPREHENSIVE HEALTH CARE FACILITY
CHINLE, AZ

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

JOANNE TOLLERTON, MD — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 1,100 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.

1,100
Total Claims
$86K
Total Drug Cost
165
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,161
Total Day Supply
33,278
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$76K
Generic Drug Cost
$9K
Antibiotic Claims
25

Patient Demographics

Average Patient Age
70.9 years
Avg HCC Risk Score
1.39
Gender Split
69% female / 31% male
Age Distribution
<65: 31, 65-74: 78, 75-84: 38, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

What JOANNE TOLLERTON, 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
Atorvastatin Calcium
145
Lisinopril
88
Metformin Hcl Er
Metformin Hcl
74
Metformin Hcl
53
Losartan Potassium
41
Metoprolol Succinate
39
Amlodipine Besylate
30
Synthroid
Levothyroxine Sodium
26
Tamsulosin Hcl
26
Easy Touch Alcohol Prep Pads
Alcohol Antiseptic Pads
25

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

Family Medicine Physician Overview

How JOANNE TOLLERTON, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

JOANNE TOLLERTON, MD's 1,100 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Arizona

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

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOANNE TOLLERTON, MD's specialty?
JOANNE TOLLERTON, MD specializes in Family Medicine Physician and practices in CHINLE, Arizona. Credentials: MD.
How much does JOANNE TOLLERTON, MD prescribe under Medicare Part D?
In 2023, JOANNE TOLLERTON, MD wrote 1,100 Medicare Part D claims totaling $86K in drug costs for 165 beneficiaries.
What is JOANNE TOLLERTON, MD's Medicare quality score?
JOANNE TOLLERTON, MD has a CMS MIPS Final Score of 84.2432/100 (Quality: 64.91, Cost: 67.5672). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOANNE TOLLERTON, MD located?
JOANNE TOLLERTON, MD is located at U.S. 191 & HOSPITAL DRIVE, CHINLE, AZ, 86503. Phone: (928) 674-7001.
What is JOANNE TOLLERTON, MD's NPI number?
JOANNE TOLLERTON, MD's National Provider Identifier (NPI) is 1639174915, issued on 06/14/2005.
Does JOANNE TOLLERTON, MD prescribe more brand-name or generic drugs?
JOANNE TOLLERTON, MD's prescribing is 16% brand-name and 84% generic drugs by claim count, with $76K in brand drug costs.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does JOANNE TOLLERTON, MD prescribe most often?
Based on 2023 Medicare Part D data, JOANNE TOLLERTON, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOANNE TOLLERTON, MD accept Medicare?
JOANNE TOLLERTON, MD appears in CMS Medicare data with 1,100 Part D claims and 165 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOANNE TOLLERTON, MD's credentials?
JOANNE TOLLERTON, MD's NPI is 1639174915 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