Dr. Alyx B. Porter Umphrey, MD

  • Scottsdale, AZ
  • Neurologist
NPI1255303236PAC ID6204803968
Medicare services, 2024
332
Medicare patients, 2024
205
Part D claims, 2024
138
Clinical trials
1
MIPS score, 2024
86
Practice address
13400 East Shea Boulevard, Scottsdale, AZ 85259
Practice phone
Call (480) 342-4201
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Mayo Clinic Ambulatory Surgery Center - Scottsdale

Surgery Center - Medicare-Certified · Scottsdale, Arizona

See all 3 affiliations

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Dr. Alyx B. Porter Umphrey is a neurologist in Scottsdale, Arizona

Dr. Porter Umphrey practices at Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona.

Dr. Porter Umphrey's NPI, 1255303236, was assigned on February 3, 2006. Dr. Porter Umphrey graduated from Lewis Katz School of Medicine in 2003. Dr. Porter Umphrey's Arizona license number on file is 40546.

NPI and contact details
Medicare PAC ID
6204803968
NPI enumeration date
February 3, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(480) 342-4201
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
49
Medical school graduation
2003

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Alyx B. Porter Umphrey practices at Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona

Dr. Porter Umphrey's primary practice is Mayo Clinic Ambulatory Surgery Center - Scottsdale, at 13400 East Shea Boulevard, Scottsdale, AZ 85259. The practice phone is (480) 342-4201.

  • Mayo Clinic Ambulatory Surgery Center - Scottsdale
    13400 East Shea Boulevard, Scottsdale, AZ 85259Phone(480) 342-4201

Source: Dmand AI Affiliation Data

Dr. Alyx B. Porter Umphrey is affiliated with 2 sites of care and 1 medical group

Dr. Porter Umphrey's primary practice is Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona. Dr. Porter Umphrey is also affiliated with Mayo Clinic Hospital - Phoenix. The medical group on file is Mayo Clinic Arizona. Dr. Porter Umphrey's employer is on file too: a surgery center (asc).

See all 3 affiliations for Dr. Porter Umphrey

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Alyx B. Porter Umphrey's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Porter Umphrey practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mayo Clinic Ambulatory Surgery Center - ScottsdaleAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Alyx B. Porter Umphrey is one of 395 neurologists in Arizona

Neurology is Dr. Porter Umphrey's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Porter Umphrey is board certified in neurology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Porter Umphrey's licenses on file in 4 states: Arizona, New Hampshire, Minnesota and Nevada.

Specialties and state licenses

  • Neurology, ArizonaPrimaryLicense 40546 · 2008 to 2025 · taxonomy 2084N0400X
  • New Hampshire licenseSince 2015
  • Neurology with special qualifications in child neurology, MinnesotaLicense 46828 · 2004 to 2025 · taxonomy 2084N0402X
  • Nevada license2015 to 2017

Clinical focus

Dmand AI lists lower back pain among the conditions Dr. Porter Umphrey treats.

Neurologists near Dr. Porter Umphrey

Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Alyx B. Porter Umphrey billed Medicare for 332 services in 2024

CMS data shows 332 Medicare services from Dr. Porter Umphrey across 6 procedure codes in 2024, for 205 Medicare patients. Medicare paid $32,736 for them. Every service was in an office.

Medicare services, 2024332
Medicare patients205
Paid by Medicare$32,736
Procedure codes6

Dr. Porter Umphrey's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2792024: 31212%
Other services
2023: 02024: 20

Dr. Porter Umphrey compared with the Arizona median for neurologists, 2024

  • Dr. Porter Umphrey
  • Arizona median
Medicare services
332vs 51235% below
Medicare patients
205vs 27225% below
Part D claims
65vs 48787% below

Medians across 365 neurologists in Arizona with Dmand AI profiles that report each measure.

Dr. Porter Umphrey's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Porter Umphrey

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Alyx B. Porter Umphrey treated 205 Medicare patients in 2024, average age 71

CMS counts 205 Medicare patients who saw Dr. Porter Umphrey in 2024. The largest group is 65 to 74, with 96 patients. 75% of them have high cholesterol, and 64% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.95, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Porter Umphrey's median patient age at 67, with 63% women.

Medicare patients, 2024205
Average age71
Average risk score1.95
Also on Medicaid5%

Dr. Porter Umphrey's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Porter Umphrey's Medicare patients by sex, 2024

  • Women11556%
  • Men9044%

Chronic conditions among Dr. Porter Umphrey's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure64%
  3. Arthritis45%
  4. Mood disorders34%
  5. Anxiety31%
  6. Depression30%
  7. Cancer28%
  8. Chronic kidney disease27%

Share of Medicare patients with each condition. A patient can have several.

Dr. Porter Umphrey's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women63%
  • Men36%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Alyx B. Porter Umphrey wrote 138 Medicare Part D claims in 2024

In 2024, Dr. Porter Umphrey wrote 138 Medicare Part D claims for 41 patients. 97% of them were for generic drugs. CMS names the drug for 65 of them, across 4 drugs with 11 or more claims each, at $1,958 in total drug cost. In 2023, CMS named 78 claims across 4 drugs.

Part D claims, 2024138
Drugs named by CMS4
Total drug cost$1,958
Part D patients41

Dr. Porter Umphrey's Part D claims by kind of drug, 2024

  • Generic134 claims97%
  • Brand-name and other4 claims3%

Dr. Porter Umphrey's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 782024: 6517%

Drugs named by CMS: 4 in 2024, 4 in 2023.

See all prescribing by Dr. Porter Umphrey

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Alyx B. Porter Umphrey scored 86 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Porter Umphrey for performance year 2024, reported as part of a group. Dr. Porter Umphrey accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Porter Umphrey as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Porter Umphrey's MIPS scores, performance year 2024

  • 86of 100Final score
  • 78.3of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 77of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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Dr. Alyx B. Porter Umphrey has worked on 1 clinical trial

Dmand AI links Dr. Porter Umphrey to 1 clinical trial. Conditions studied include Glioblastoma and Astrocytoma.

Conditions in Dr. Porter Umphrey's trials

  • Glioblastoma
  • Astrocytoma

Investigators on the most trials with Dr. Porter Umphrey

Recent clinical trials with Dr. Porter Umphrey

Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage

Dr. Alyx B. Porter Umphrey received $631 in industry payments from 2016 to 2019

CMS Open Payments shows 7 general payments to Dr. Porter Umphrey from 2 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 99% of the total. Novocure Inc. paid the most, $608.

General payments to Dr. Porter Umphrey by program year, 2016 to 2019

General payments to Dr. Porter Umphrey by kind, 2016 to 2019

$631in total
  • Food and beverage$62699%
  • Education$61%

Companies that paid Dr. Porter Umphrey the most, 2016 to 2019

Share is of all general payments to this clinician.

See all payments to Dr. Porter Umphrey

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Alyx B. Porter Umphrey graduated from Lewis Katz School of Medicine

Dr. Porter Umphrey graduated from Lewis Katz School of Medicine in 2003.

  1. Medical schoolLewis Katz School of Medicine
  2. Board certified in neurologyAmerican Board of Psychiatry and Neurology

Source: Dmand AI Professional Profile Data

Dr. Alyx B. Porter Umphrey accepts plans from 8 insurance carriers

Dr. Porter Umphrey is in network with 8 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.

  • Elevance
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Aetna
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare
  • EMI Health
  • HCSC

Plan types Dr. Porter Umphrey accepts, by number of carriers

  1. PPO5
  2. HMO4
  3. Medicare3
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Alyx B. Porter Umphrey's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Clinical trials and co-investigatorsClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Alyx B. Porter Umphrey

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Alyx B. Porter Umphrey's NPI number?

Dr. Alyx B. Porter Umphrey's NPI number is 1255303236. It was assigned on February 3, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Alyx B. Porter Umphrey?

Dr. Alyx B. Porter Umphrey is a neurologist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).

Where does Dr. Alyx B. Porter Umphrey practice?

Dr. Porter Umphrey practices at 13400 East Shea Boulevard, Scottsdale, AZ 85259. Dr. Porter Umphrey's primary practice is Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona.

What is Dr. Alyx B. Porter Umphrey's office phone number?

The practice phone on file for Dr. Porter Umphrey is (480) 342-4201.

What is Dr. Alyx B. Porter Umphrey's medical license number?

Dr. Porter Umphrey's Arizona license number on file is 40546, one of the licenses on file in 4 states.

Which states has Dr. Alyx B. Porter Umphrey been licensed in?

Dmand AI has state licenses on file for Dr. Porter Umphrey in Arizona (2008 to 2025), New Hampshire (since 2015), Minnesota (2004 to 2025) and Nevada (2015 to 2017).

Which hospitals is Dr. Alyx B. Porter Umphrey affiliated with?

Dr. Porter Umphrey is affiliated with Mayo Clinic Hospital - Phoenix.

What medical group is Dr. Alyx B. Porter Umphrey part of?

Dr. Porter Umphrey is linked to Mayo Clinic Arizona.

Does Dr. Alyx B. Porter Umphrey accept Medicare?

Yes. CMS data shows Dr. Porter Umphrey billed Medicare for 332 services in 2024, and Dr. Porter Umphrey accepts Medicare assignment.

Does Dr. Alyx B. Porter Umphrey offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Porter Umphrey as offering telehealth services.

Show 10 more questionsShow fewer questions

What is Dr. Alyx B. Porter Umphrey's MIPS score?

Dr. Porter Umphrey's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.

How many Medicare patients does Dr. Alyx B. Porter Umphrey see?

CMS counts 205 Medicare patients who saw Dr. Porter Umphrey in 2024, with an average age of 71.

Is Dr. Alyx B. Porter Umphrey board certified?

Yes. Dr. Porter Umphrey is board certified in neurology by the American Board of Psychiatry and Neurology.

What services does Dr. Alyx B. Porter Umphrey bill to Medicare?

In 2024, Dr. Porter Umphrey's most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and office visit, established patient (99213).

Where did Dr. Alyx B. Porter Umphrey go to medical school?

Dr. Porter Umphrey graduated from Lewis Katz School of Medicine in 2003.

What drugs does Dr. Alyx B. Porter Umphrey prescribe most?

In 2024 Medicare Part D data, Dr. Porter Umphrey's most prescribed drugs by claims were Levetiracetam, Dexamethasone and Gabapentin.

Has Dr. Alyx B. Porter Umphrey received payments from drug or device companies?

CMS Open Payments shows $631 in general payments to Dr. Porter Umphrey from 2 companies from 2016 to 2019. The largest total came from Novocure Inc.

How long has Dr. Alyx B. Porter Umphrey been practicing?

Dr. Porter Umphrey graduated from medical school in 2003, 23 years ago.

Does Dr. Alyx B. Porter Umphrey do research?

Dr. Porter Umphrey has worked on 1 clinical trial.

What insurance does Dr. Alyx B. Porter Umphrey accept?

Dr. Porter Umphrey is in network with 8 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.

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