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Dr. Nathan L. Delafield, MD
NPI1497101398PAC ID6608160254
- Medicare services, 2024
- 670
- Medicare patients, 2024
- 400
- Part D claims, 2024
- 1,030
- Publications
- 4
- MIPS score, 2024
- 86
- Practice address
- 13400 East Shea Boulevard, Scottsdale, AZ 85259
- Practice phone
- Call (480) 342-4201
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayo Clinic Ambulatory Surgery Center - Scottsdale
Surgery Center - Medicare-Certified · Scottsdale, Arizona
Find Dr. Delafield's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nathan L. Delafield is an internist in Scottsdale, Arizona
Dr. Delafield practices at Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona.
Dr. Delafield's NPI, 1497101398, was assigned on May 10, 2016. Dr. Delafield graduated from Indiana University School of Medicine in 2016. Dr. Delafield holds Arizona license 54952.
NPI and contact details
- NPI
- 1497101398NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608160254
- NPI enumeration date
- May 10, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (480) 342-4201
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathan L. Delafield practices at Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona
Dr. Delafield'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 - Scottsdale13400 East Shea Boulevard, Scottsdale, AZ 85259Phone(480) 342-4201
Source: Dmand AI Affiliation Data
Dr. Nathan L. Delafield is affiliated with 4 sites of care and 2 medical groups
Dr. Delafield's primary practice is Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona. Dr. Delafield is also affiliated with Mayo Clinic Hospital - Phoenix. The medical group on file is Mayo Clinic Arizona. Dmand AI also links Dr. Delafield to 1 more group practice or clinic, 1 home health agency and 1 medical group, each named with a free account. Dr. Delafield's employer is on file too: a surgery center (asc).
Mayo Clinic Ambulatory Surgery Center - ScottsdalePrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathan L. Delafield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Delafield practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Ambulatory Surgery Center - Scottsdale | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Nathan L. Delafield is one of 2,420 internists in Arizona
Internal medicine is Dr. Delafield's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Delafield is licensed in Arizona.
Specialties and state licenses
- Internal medicine, ArizonaPrimary
Internists near Dr. Delafield
Counts of internists 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. Nathan L. Delafield billed Medicare for 670 services in 2024
CMS data shows 670 Medicare services from Dr. Delafield across 10 procedure codes in 2024, for 400 Medicare patients. Medicare paid $48,634 for them. Every service was in an office.
Medicare services, 2024670
Medicare patients400
Paid by Medicare$48,634
Procedure codes10
Dr. Delafield's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4162024: 46412%
- Other services
- 2023: 262024: 154492%
- Tests and treatments
- 2023: 732024: 5229%
Dr. Delafield compared with the Arizona median for internists, 2024
- Dr. Delafield
- Arizona median
- Medicare services
- 670vs 47641% above
- Medicare patients
- 400vs 20595% above
- Part D claims
- 562vs 2602.2 times
Medians across 2,300 internists in Arizona with Dmand AI profiles that report each measure.
Dr. Delafield'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.
Need commercial claims for Dr. Delafield?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Delafield and other internists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan L. Delafield treated 400 Medicare patients in 2024, average age 76
CMS counts 400 Medicare patients who saw Dr. Delafield in 2024. The largest group is 65 to 74, with 185 patients. 75% of them have high cholesterol, and 67% have high blood pressure. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Delafield's median patient age at 66, with 45% women.
Medicare patients, 2024400
Average age76
Average risk score1.10
Dr. Delafield's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Delafield's Medicare patients by sex, 2024
- Women20752%
- Men19348%
Chronic conditions among Dr. Delafield's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis50%
- Ischemic heart disease27%
- Chronic kidney disease25%
- Cancer23%
- Anxiety22%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Delafield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan L. Delafield wrote 1,030 Medicare Part D claims in 2024
In 2024, Dr. Delafield wrote 1,030 Medicare Part D claims for 319 patients. 88% of them were for generic drugs. CMS names the drug for 562 of them, across 20 drugs with 11 or more claims each, at $36,785 in total drug cost. In 2023, CMS named 1,122 claims across 39 drugs.
Part D claims, 20241,030
Drugs named by CMS20
Total drug cost$36,785
Part D patients319
Dr. Delafield's Part D claims by kind of drug, 2024
- Generic909 claims88%
- Brand-name and other121 claims12%
Dr. Delafield'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.
Drug classes CMS tracks in Dr. Delafield's Part D claims, 2024
- Opioids1%14 of 1,030 claims
- Antibiotics3%27 of 1,030 claims
- Antipsychotics, patients 65 and over2%16 of 1,030 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1222024: 56250%
Drugs named by CMS: 20 in 2024, 39 in 2023.
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. Nathan L. Delafield 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. Delafield for performance year 2024, reported as part of a group. Dr. Delafield accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Delafield as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Delafield'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
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Dr. Nathan L. Delafield has 4 publications on record
Dmand AI links 4 papers to Dr. Delafield, published from 2019 to 2025. 2025 was the busiest year, with 2. Dr. Delafield's most frequent co-authors are Kara L. Asbury, MD, Hally Chaffin, MD and Nikita Chhabra, DO.
Papers4
Years published2019 to 2025
Dr. Delafield's most frequent co-authors
Recent publications by Dr. Delafield
Biomedical ResearchCurriculumInternal Medicine
Transpl Infect Dis
Antifungal AgentsAscomycotaHeart Transplantation
See who Dr. Delafield researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Delafield works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nathan L. Delafield received $78 in industry payments from 2020 to 2024
CMS Open Payments shows 3 general payments to Dr. Delafield from 3 drug and device companies from 2020 to 2024. Food and beverage make up the largest share, 100% of the total. Exact Sciences Corporation paid the most, $48.
General payments to Dr. Delafield by program year, 2020 to 2024
Companies that paid Dr. Delafield the most, 2020 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathan L. Delafield graduated from Indiana University School of Medicine
Dr. Delafield graduated from Indiana University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan L. Delafield's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nathan L. Delafield
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. Nathan L. Delafield's NPI number?
Dr. Nathan L. Delafield's NPI number is 1497101398. It was assigned on May 10, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan L. Delafield?
Dr. Nathan L. Delafield is an internist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nathan L. Delafield practice?
Dr. Delafield practices at 13400 East Shea Boulevard, Scottsdale, AZ 85259. Dr. Delafield's primary practice is Mayo Clinic Ambulatory Surgery Center - Scottsdale in Scottsdale, Arizona. Dmand AI also links Dr. Delafield to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Dr. Nathan L. Delafield's office phone number?
The practice phone on file for Dr. Delafield is (480) 342-4201.
What is Dr. Nathan L. Delafield's medical license number?
Dr. Delafield holds Arizona license 54952.
Which hospitals is Dr. Nathan L. Delafield affiliated with?
Dr. Delafield is affiliated with Mayo Clinic Hospital - Phoenix.
What medical group is Dr. Nathan L. Delafield part of?
Dr. Delafield is linked to Mayo Clinic Arizona. Dmand AI links Dr. Delafield to 1 more medical group.
Does Dr. Nathan L. Delafield accept Medicare?
Yes. CMS data shows Dr. Delafield billed Medicare for 670 services in 2024, and Dr. Delafield accepts Medicare assignment.
Does Dr. Nathan L. Delafield offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Delafield as offering telehealth services.
What is Dr. Nathan L. Delafield's MIPS score?
Dr. Delafield's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Nathan L. Delafield see?
CMS counts 400 Medicare patients who saw Dr. Delafield in 2024, with an average age of 76.
What services does Dr. Nathan L. Delafield bill to Medicare?
In 2024, Dr. Delafield's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, established patient (99213).
Where did Dr. Nathan L. Delafield go to medical school?
Dr. Delafield graduated from Indiana University School of Medicine in 2016.
What drugs does Dr. Nathan L. Delafield prescribe most?
In 2024 Medicare Part D data, Dr. Delafield's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Nathan L. Delafield received payments from drug or device companies?
CMS Open Payments shows $78 in general payments to Dr. Delafield from 3 companies from 2020 to 2024. The largest total came from Exact Sciences Corporation.
How long has Dr. Nathan L. Delafield been practicing?
Dr. Delafield graduated from medical school in 2016, 10 years ago.
Does Dr. Nathan L. Delafield do research?
Dmand AI links 4 publications to Dr. Delafield, published from 2019 to 2025.
Who does Dr. Nathan L. Delafield publish with?
Dr. Delafield's most frequent co-authors are Kara L. Asbury, MD (1 shared paper), Hally Chaffin, MD (1 shared paper) and Nikita Chhabra, DO (1 shared paper).
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