Dr. Kate Preston , MD
Surgery โข Flagstaff, AZ
77 W Forest Ave Ste 201
Flagstaff, AZ 860011483
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 16, 2008; this date does not establish years in practice.
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Published CMS data list 476 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 134 service units.
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 61 service units.
- 99204 โ New patient outpatient office visit: 42 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 13 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 191 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone Hcl โ 74 prescription fills, including refills.
- Ondansetron Hcl โ 63 prescription fills, including refills.
- Ibuprofen โ 54 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Surgery in Flagstaff, AZ (2024, 11 clinicians with data). Median for this group: 284. Middle half: 202 to 391.
More Medicare Part B services than 80% of clinicians listed under Surgery in Arizona (2024, 332 clinicians with data). Median for this group: 204. Middle half: 93 to 356.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 392 in 2020 to 476 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
77 W Forest Ave Ste 201
Flagstaff, AZ 860011483
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Sedona, AZ. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Flagstaff Surgical Associates Pa; Northern Arizona Healthcare Corporation. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2008
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
269 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $91,434 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $69,452 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
191 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$395 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $6,257.35 across 11 records.
By nature of payment
- Consulting Fee: $4,750.00 across 3 records.
- Travel and Lodging: $1,162.94 across 2 records.
- Food and Beverage: $344.41 across 6 records.
Reporting-company totals (3 largest of 4)
- Elucent Medical: $6,069.46 across 6 records.
- Stryker Corporation: $143.34 across 3 records.
- ABBVIE INC.: $22.53 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
18 years (graduated 2008)
CMS Doctors and Clinicians data list 2008 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2008
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Preston has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Preston as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Flagstaff and Arizona
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Surgery in Flagstaff, AZ (2024, 11 clinicians with data). Median for this group: 284. Middle half: 202 to 391.
More Medicare Part B services than 80% of clinicians listed under Surgery in Arizona (2024, 332 clinicians with data). Median for this group: 204. Middle half: 93 to 356.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Surgery in Flagstaff, AZ (2024, 11 clinicians with data). Median for this group: $38,607. Middle half: $27,353 to $45,065.
A higher Medicare-allowed amount than 85% of clinicians listed under Surgery in Arizona (2024, 332 clinicians with data). Median for this group: $29,780. Middle half: $11,067 to $59,552.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Surgery in Flagstaff, AZ (2024, 11 clinicians with data). Median for this group: $30,474. Middle half: $20,224 to $34,187.
A higher Medicare payment amount than 85% of clinicians listed under Surgery in Arizona (2024, 332 clinicians with data). Median for this group: $22,981. Middle half: $8,438 to $45,945.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Surgery in Arizona (2024, 309 clinicians with data). Median for this group: 49. Middle half: 23 to 129.
Too few clinicians listed under Surgery in Flagstaff have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Surgery in Arizona (2024, 309 clinicians with data). Median for this group: $332. Middle half: $99 to $1,108.
Too few clinicians listed under Surgery in Flagstaff have Medicare Part D data for 2024 to compare.
14 active clinicians are listed under Surgery with a practice address in Flagstaff, AZ (777 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Flagstaff
28.6% of these 14 clinicians have the CMS telehealth indicator.
85.7% of these 14 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 21% from 392 in 2020 to 476 in 2024.
- 2020: 392
- 2021: 458
- 2022: 437
- 2023: 427
- 2024: 476
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $95,886 in 2020 and $91,434 in 2024.
- 2020: $95,886
- 2021: $91,423
- 2022: $78,131
- 2023: $62,564
- 2024: $91,434
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Paid by Medicare
Paid by Medicare varied from year to year: $75,243 in 2020 and $69,452 in 2024.
- 2020: $75,243
- 2021: $70,853
- 2022: $59,198
- 2023: $47,195
- 2024: $69,452
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 85% from 103 in 2020 to 191 in 2024.
- 2020: 103
- 2021: 106
- 2022: 91
- 2023: 94
- 2024: 191
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30-day fills
30-day fills increased 85% from 103 in 2020 to 191 in 2024.
- 2020: 103
- 2021: 106
- 2022: 91
- 2023: 94
- 2024: 191
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Part D drug cost
Part D drug cost went from $320 in 2020 to $395 in 2024.
- 2020: $320
- 2021: $320
- 2022: $281
- 2023: $437
- 2024: $395
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $408.09 in 2021 to $6,257.35 in 2025.
- 2021: $408.09
- 2022: $117.55
- 2023: $102.45
- 2024: $6,336.48
- 2025: $6,257.35
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 11 records totaling $6,257.35.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Elucent Medical |
Consulting Fee
Cash or cash equivalent
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โ | General | $2,750.00 |
| Elucent Medical |
Consulting Fee
Cash or cash equivalent
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โ | General | $1,400.00 |
| Elucent Medical |
Consulting Fee
Cash or cash equivalent
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โ | General | $600.00 |
| Elucent Medical |
Travel and Lodging
Cash or cash equivalent
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โ | General | $581.47 |
| Elucent Medical |
Travel and Lodging
Cash or cash equivalent
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โ | General | $581.47 |
| Elucent Medical |
Food and Beverage
Cash or cash equivalent
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โ | General | $156.52 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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MOLLI | General | $93.19 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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SPY-PHI SYSTEM | General | $25.51 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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SPY-PHI SYSTEM | General | $24.64 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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BOTOX | General | $22.53 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Vascular Intervention | General | $22.02 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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134 | 103 | $270.04 | $119.66 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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61 | 39 | $199.00 | $75.34 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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42 | 42 | $437.10 | $161.58 |
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38525
Biopsy or removal of deep lymph nodes of underarm
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39 | 39 | $1246.72 | $230.37 |
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19301
Partial removal of breast
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38 | 38 | $1864.68 | $661.17 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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36 | 28 | $199.83 | $87.73 |
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38900
Imaging of lymph nodes during surgery
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33 | 33 | $386.30 | $129.62 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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30 | 30 | $530.43 | $212.48 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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17 | 17 | $366.06 | $173.34 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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13 | 13 | $557.00 | $164.95 |
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36561
Insertion of central venous tube with port (5 years or older)
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11 | 11 | $2932.00 | $299.01 |
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47563
Removal of gallbladder with x-ray study of bile ducts using an endoscope
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11 | 11 | $2098.18 | $684.62 |
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77001
Fluoroscopic guidance for insertion or removal of central vein access device
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11 | 11 | $260.00 | $17.03 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 74 | 152 | $124.30 | 68 |
| Ondansetron Hcl | Ondansetron Hcl | 63 | 159 | $181.91 | 59 |
| Ibuprofen | Ibuprofen | 54 | 184 | $88.72 | 50 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-01-14NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20160301002562
AZ
1658506795
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Northern Arizona Healthcare Corporation
1200 N Beaver St, Flagstaff, AZ 860013118
Phone: 9287793366
Northern Arizona Healthcare Corporation
3700 W Hwy 89a, Sedona, AZ 863364937
Phone: 9282044944
Flagstaff Surgical Associates Pa
77 W Forest Ave, Flagstaff, AZ 860011483
Phone: 9287732222
Secondary Practice Locations
3700 W State Route 89a
Sedona, AZ 863364937
Phone: 9282044180
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery
Doctor of Medicine (M.D.)
Urology
Doctor of Medicine (M.D.)
Audiologist
Doctor of Audiology
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Osteopathic Medicine (D.O.), Master of Business Administration
Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Additional practice office at 3700 W State Route 89A, Sedona, AZ 863364937
Registered at 77 W FOREST AVE STE 201, FLAGSTAFF, AZ 860011483 (Tel: 9287732222)
Surgery (license number reported to NPPES: AZ 51189)
Registered at 77 W FOREST AVE, SUITE 201, FLAGSTAFF, AZ 86001 (Tel: 9287732222)
NPI status registered as active in NPPES database
Registered at 77 W FOREST AVE, SUITE 201, FLAGSTAFF, AZ 860011479 (Tel: 9287732222)
Registered at 77 W FOREST AVE, SUITE 201, FLAGSTAFF, AZ 860011479 (Tel: 9287732222)
Recorded as KATE PRESTON, M.D.
Specialist (license number reported to NPPES: AZ 51189)
NPI status registered as active in NPPES database
Registered at 777 HOSPITAL WAY STE 201, POCATELLO, ID 832015162 (Tel: 2082392716)
Registered at 777 HOSPITAL WAY STE 201, POCATELLO, ID 832015162 (Tel: 2082392716)
Recorded as KATE PRESTON, M.D.
Surgery (license number reported to NPPES: AZ 70792)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Flagstaff
- Dr. Sarah Sohail, MD
- Dr. Ralph Kelley, DO
- Dr. Joshua Damian, MD
- Dr. Adam Boettcher, MD
- Dr. Kael Nahikian, MD, MSC, MS
- Dr. Kathleen Collins, DO, MBA
Mailing Address
77 W Forest Ave, Suite 201
Flagstaff, AZ 860011479
Phone: 9287732222