Dr. Sandy Cole Marks , MD
Anesthesiology โข Fort Collins, CO
1236 E Elizabeth St, Suite1
Fort Collins, CO 805244000
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 October 6, 2005; this date does not establish years in practice.
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Published CMS data list 107 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:
- 00560 โ Anesthesia for procedure on heart and large blood vessels: 31 service units.
- 36620 โ Insertion of artery tube for blood sampling or infusion through skin: 29 service units.
- 01922 โ Anesthesia for x-ray or radiation therapy: 24 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 5 records in the table ยท Guide: How to read Medicare Part B data
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More Medicare Part B services than 85% of clinicians listed under Anesthesiology in Fort Collins, CO (2024, 48 clinicians with data). Median for this group: 43. Middle half: 27 to 78.
More Medicare Part B services than 65% of clinicians listed under Anesthesiology in Colorado (2024, 573 clinicians with data). Median for this group: 66. Middle half: 30 to 135.
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 108 in 2020 to 107 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1236 E Elizabeth St
Suite1
Fort Collins, CO 805244000
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Northern Colorado Anesthesia Professionals Pllc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Massachusetts Medical School
1992
What Public CMS Data Show
Anesthesiology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
128 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 $24,067 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 $18,850 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.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
34 years (graduated 1992)
CMS Doctors and Clinicians data list 1992 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.
NPI first issued
2005
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; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Marks 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. Marks 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 Fort Collins and Colorado
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under Anesthesiology in Fort Collins, CO (2024, 48 clinicians with data). Median for this group: 43. Middle half: 27 to 78.
More Medicare Part B services than 65% of clinicians listed under Anesthesiology in Colorado (2024, 573 clinicians with data). Median for this group: 66. Middle half: 30 to 135.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Anesthesiology in Fort Collins, CO (2024, 48 clinicians with data). Median for this group: $4,123. Middle half: $2,676 to $7,890.
A higher Medicare-allowed amount than 85% of clinicians listed under Anesthesiology in Colorado (2024, 573 clinicians with data). Median for this group: $8,455. Middle half: $3,190 to $16,474.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Anesthesiology in Fort Collins, CO (2024, 48 clinicians with data). Median for this group: $3,261. Middle half: $2,122 to $6,074.
A higher Medicare payment amount than 85% of clinicians listed under Anesthesiology in Colorado (2024, 573 clinicians with data). Median for this group: $6,611. Middle half: $2,532 to $13,230.
66 active clinicians are listed under Anesthesiology with a practice address in Fort Collins, CO (1,205 in Colorado).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Fort Collins
0% of these 66 clinicians have the CMS telehealth indicator.
75.8% of these 66 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 varied from year to year: 108 in 2020 and 107 in 2024.
- 2020: 108
- 2021: 60
- 2022: 122
- 2023: 101
- 2024: 107
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Medicare-allowed amount
Medicare-allowed amount increased 19% from $20,299 in 2020 to $24,067 in 2024.
- 2020: $20,299
- 2021: $5,044
- 2022: $31,188
- 2023: $18,727
- 2024: $24,067
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Paid by Medicare
Paid by Medicare increased 18% from $15,953 in 2020 to $18,850 in 2024.
- 2020: $15,953
- 2021: $4,041
- 2022: $24,887
- 2023: $14,946
- 2024: $18,850
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
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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00560
Anesthesia for procedure on heart and large blood vessels
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31 | 31 | $3205.16 | $467.94 |
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36620
Insertion of artery tube for blood sampling or infusion through skin
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29 | 29 | $375.00 | $41.82 |
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01922
Anesthesia for x-ray or radiation therapy
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24 | 23 | $1282.50 | $181.00 |
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36556
Insertion of non-tunneled central venous tube for infusion (5 years or older)
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12 | 12 | $500.00 | $80.00 |
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01926
Anesthesia for x-ray on artery of brain, heart, or chest
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11 | 11 | $1914.55 | $276.69 |
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.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ANESTHESIOLOGY
I20100923001335
CO
8921124249
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
Northern Colorado Anesthesia Professionals Pllc
1024 S Lemay Ave, Fort Collins, CO 805243929
Phone: 9704957000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History
NPI enumerated October 06, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Anesthesiology Specialists in Fort Collins
- Dr. Jeremy Huff, DO
- Dr. Sean Serell, MD
- Dr. James Derrisaw, MD
- Dr. Amy Lichon, DO
- Dr. Richard Alessi, MD
- Dr. Brook Arnold, MD
Mailing Address
1236 E Elizabeth St, Suite 1
Fort Collins, CO 805244000
Phone: 9702242985