2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1225131014 MD
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Sandra Rubio, MD

Endocrinology, Diabetes & Metabolism Physician in Cottonwood, Arizona. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,852 in Endocrinology, Diabetes & Metabolism 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
2K
Medicare Part D claims · 484 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
36%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.2/100
▲ 0 pts above national avg 83.1 · Above neutral
Industry payments
$241.82
3 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Sandra Rubio, MD reported a CMS MIPS final score of 83.2/100 - above the 83.1 national average - and filed 2,477 Medicare Part D claims in 2023.

83.2/100
MIPS score · +0 vs avg
2K
Part D claims, 2023
36%
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.

Sandra Rubio, MD's MIPS score vs every scored U.S. clinician

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

83 42nd percentile higher than 42% 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+: 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

Where Sandra Rubio, MD sits

This provider among endocrinology, diabetes & metabolism physician peers

Across the 2,521 endocrinology, diabetes & metabolism physician providers who report both Medicare Part D prescribing and a MIPS quality score, Sandra Rubio, MD writes more Part D claims than 50% of them and scores higher on MIPS quality than 45% - placing this provider in the high-volume, lower-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 quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 50Sandra Rubio, MD-Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 45
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one endocrinology, diabetes & metabolism physician peer from a representative sample of 60; the gold marker is Sandra Rubio, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Sandra Rubio, 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 Sandra Rubio, MD?

Near national average

NPI registry status

Active

Issued 09/07/2006

NPI 1225131014

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

2,477 6% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

MIPS final score

83.2/100 0.1 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Arizona

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Arizona providers

Arizona providers

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

Pharmacist - 5.6%Pharmacist5.6%Behavior Technician - 5.6%Behavior Technician5.6%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4.2%Physical Therapist4.2%Speech-Language Pathologist - 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program - 3.5%Student in an Organized Health Care Education/Training Program3.5%Endocrinology, Diabetes & Metabolism Physician - 0.1%Endocrinology, Diabetes & Metabolism Physician0.1%
Largest specialties in Arizona (% of in-state providers)

Medicare quality performance, MIPS

Sandra Rubio, MD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average

Near national average
MIPS Final Score
83.2/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 83.2/100 vs national avg 83.1

0%100%National avg83%83.2%
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) - 83.2/100 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).

Sandra Rubio, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 340 S WILLARD ST, Cottonwood, AZ, 86326, with a listed phone of (928) 639-6025. NPI 1225131014 was issued on 09/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Rubio 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 2,477 prescription claims written by this provider, covering 484 Medicare beneficiaries and totaling roughly $1.6 million in drug spend, split 53% brand-name and 36% 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 83.2/100 for the 2023 performance year (Quality 87.7, Cost 71.3), compared with the national average of 83.1.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

340 S WILLARD ST
Cottonwood, AZ 86326

Provider Details

NPI 1225131014
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Female
NPI Issued 09/07/2006

CMS Quality Score (MIPS)

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

83.2066
Final Score
Avg: 83.1
87.7387
Quality
71.2832
Cost
82
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Sandra Rubio, 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.

Kingman Healthcare Inc
Kingman, 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).

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Sandra Rubio, MD. Source: openpaymentsdata.cms.gov.

Total received

$242

Largest payer

Medtronic, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Brand-heavy

Sandra Rubio, MD - brand share 53.0%
Endocrinology, Diabetes & Metabolism Physician average

53% brand-name claims vs 36% generic, on 2,477 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.

2,477
Total Claims
$1.6M
Total Drug Cost
484
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,617
Total Day Supply
165,001
Brand vs Generic
53% brand / 36% generic
Brand Drug Cost
$1.4M
Generic Drug Cost
$42K

Patient Demographics

Average Patient Age
67.4 years
Avg HCC Risk Score
1.69
Gender Split
66% female / 34% male
Age Distribution
<65: 134, 65-74: 242, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Sandra Rubio, 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
Levothyroxine Sodium
263
Trulicity
Dulaglutide
99
Soliqua 100-33
Insulin Glargine/Lixisenatide
96
Methimazole
91
Metformin Hcl Er
Metformin Hcl
86
Synthroid
Levothyroxine Sodium
82
Novolog Flexpen
Insulin Aspart
68
Jardiance
Empagliflozin
67
Ozempic
Semaglutide
67
Novolog
Insulin Aspart
59

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

Endocrinology, Diabetes & Metabolism Physician Overview

How Sandra Rubio, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

Sandra Rubio, MD's 2,477 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Arizona

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

Compare Endocrinology, Diabetes & Metabolism 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 Arizona medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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 Sandra Rubio, MD's specialty?
Sandra Rubio, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Cottonwood, Arizona. Credentials: MD.
How much does Sandra Rubio, MD prescribe under Medicare Part D?
In 2023, Sandra Rubio, MD wrote 2,477 Medicare Part D claims totaling $1.6M in drug costs for 484 beneficiaries.
What is Sandra Rubio, MD's Medicare quality score?
Sandra Rubio, MD has a CMS MIPS Final Score of 83.2/100 (Quality: 87.7, Cost: 71.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sandra Rubio, MD located?
Sandra Rubio, MD is located at 340 S WILLARD ST, Cottonwood, AZ, 86326. Phone: (928) 639-6025.
What is Sandra Rubio, MD's NPI number?
Sandra Rubio, MD's National Provider Identifier (NPI) is 1225131014, issued on 09/07/2006.
Does Sandra Rubio, MD prescribe more brand-name or generic drugs?
Sandra Rubio, MD's prescribing is 53% brand-name and 36% generic drugs by claim count, with $1.4M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Sandra Rubio, MD prescribe most often?
Based on 2023 Medicare Part D data, Sandra Rubio, MD's most frequently prescribed drugs include Levothyroxine Sodium, Trulicity, Soliqua 100-33. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sandra Rubio, MD accept Medicare?
Sandra Rubio, MD appears in CMS Medicare data with 2,477 Part D claims and 484 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sandra Rubio, MD's credentials?
Sandra Rubio, MD's NPI is 1225131014 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.