Dr. Mark Charles Spiro , MD
Anesthesiology โข Phoenix, AZ
645 E Missouri Ave Ste 300
Phoenix, AZ 850121351
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 January 25, 2006; this date does not establish years in practice.
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Published CMS data list 46 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:
- 00670 โ Anesthesia for extensive surgery on spine: 18 service units.
- 00731 โ Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope: 16 service units.
- 01402 โ Anesthesia for procedure for total knee joint replacement: 12 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 the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 129 Medicare Part D prescriptions, including refills, in 2018.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018. Published rows only; this is not a quality measure.
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Published Part D records, 2018:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) โ 39 prescription fills, including refills.
- Gabapentin โ 25 prescription fills, including refills.
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) โ 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 70% of clinicians listed under Anesthesiology in Phoenix, AZ (2024, 325 clinicians with data). Median for this group: 84. Middle half: 39 to 171.
Fewer Medicare Part B services than 70% of clinicians listed under Anesthesiology in Arizona (2024, 826 clinicians with data). Median for this group: 94. Middle half: 39 to 191.
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 103 in 2020 to 46 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
645 E Missouri Ave Ste 300
Phoenix, AZ 850121351
CMS Doctors and Clinicians lists 1 group name: Valley Anesthesiology Consultants Inc. 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 Cincinnati College Of Medicine
1986
What Public CMS Data Show
Anesthesiology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
144 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 $17,903 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 $14,291 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
163 standardized 30-day fills in 2018
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
$3,181 in 2018
The total cost of these prescriptions in 2018, 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, 2018.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
40 years (graduated 1986)
CMS Doctors and Clinicians data list 1986 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
2006
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. Spiro 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. Spiro 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 Phoenix and Arizona
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Anesthesiology in Phoenix, AZ (2024, 325 clinicians with data). Median for this group: 84. Middle half: 39 to 171.
Fewer Medicare Part B services than 70% of clinicians listed under Anesthesiology in Arizona (2024, 826 clinicians with data). Median for this group: 94. Middle half: 39 to 191.
Medicare-allowed amount
Close to the middle for clinicians listed under Anesthesiology in Phoenix, AZ (2024, 325 clinicians with data). Median for this group: $14,645. Middle half: $6,459 to $29,308.
Close to the middle for clinicians listed under Anesthesiology in Arizona (2024, 826 clinicians with data). Median for this group: $13,894. Middle half: $5,495 to $27,955.
Paid by Medicare
Close to the middle for clinicians listed under Anesthesiology in Phoenix, AZ (2024, 325 clinicians with data). Median for this group: $11,568. Middle half: $5,228 to $23,314.
Close to the middle for clinicians listed under Anesthesiology in Arizona (2024, 826 clinicians with data). Median for this group: $11,077. Middle half: $4,371 to $22,289.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Spiro are from 2018.
602 active clinicians are listed under Anesthesiology with a practice address in Phoenix, AZ (1,473 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Phoenix
0.8% of these 602 clinicians have the CMS telehealth indicator.
63.5% of these 602 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 decreased 55% from 103 in 2020 to 46 in 2024.
- 2020: 103
- 2021: 16
- 2022: 45
- 2023: 80
- 2024: 46
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Medicare-allowed amount
Medicare-allowed amount decreased 30% from $25,403 in 2020 to $17,903 in 2024.
- 2020: $25,403
- 2021: $2,541
- 2022: $6,659
- 2023: $14,089
- 2024: $17,903
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Paid by Medicare
Paid by Medicare decreased 30% from $20,367 in 2020 to $14,291 in 2024.
- 2020: $20,367
- 2021: $2,035
- 2022: $5,371
- 2023: $11,133
- 2024: $14,291
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 17% from 110 in 2014 to 129 in 2018.
- 2014: 110
- 2015: 180
- 2016: 211
- 2017: 224
- 2018: 129
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30-day fills
30-day fills increased 48% from 110 in 2014 to 163 in 2018.
- 2014: 110
- 2015: 192
- 2016: 246
- 2017: 280
- 2018: 163
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Part D drug cost
Part D drug cost increased 20% from $2,658 in 2014 to $3,181 in 2018.
- 2014: $2,658
- 2015: $9,386
- 2016: $6,754
- 2017: $5,135
- 2018: $3,181
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2018), 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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00670
Anesthesia for extensive surgery on spine
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18 | 18 | $4075.50 | $596.26 |
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00731
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
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16 | 16 | $1340.63 | $184.89 |
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01402
Anesthesia for procedure for total knee joint replacement
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12 | 12 | $2454.83 | $351.04 |
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 2018.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 39 | 1,076 | $893.80 | 20 |
| Gabapentin | Gabapentin | 25 | 1,410 | $674.48 | 19 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 22 | 618 | $483.10 | 14 |
| Morphine Sulfate Er | Morphine Sulfate | 16 | 473 | $525.31 | โ |
| Duloxetine Hcl | Duloxetine Hcl | 15 | 600 | $451.08 | โ |
| Tizanidine Hcl | Tizanidine Hcl | 12 | 569 | $152.86 | โ |
Source: CMS Part D by Provider and Drug, 2018; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-02-16NUCC 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.
NUCC Taxonomy Code: 208VP0014X
Interventional Pain Medicine is the discipline of medicine devoted to the diagnosis and treatment of pain and related disorders principally with the application of interventional techniques in managing subacute, chronic, persistent, and intractable pain, independently or in conjunction with other modalities of treatment.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ANESTHESIOLOGY
I20040211001112
AZ
2264326008
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
Valley Anesthesiology Consultants Inc
5555 W Thunderbird Rd, Glendale, AZ 853064622
Phone: 6025885475
Valley Anesthesiology Consultants Inc
9003 E Shea Blvd, Scottsdale, AZ 852606709
Phone: 4803233000
Valley Anesthesiology Consultants Inc
5555 W Thunderbird Rd, Glendale, AZ 853064622
Phone: 6028655555
Valley Anesthesiology Consultants Inc
20401 N 73rd St, Scottsdale, AZ 852554146
Phone: 9549395000
Valley Anesthesiology Consultants Inc
3535 N Scottsdale Rd, Scottsdale, AZ 852515625
Phone: 4808824365
Valley Anesthesiology Consultants Inc
1500 S Dobson Rd, Mesa, AZ 852024722
Phone: 4804123577
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.)
Anesthesiology - Pain Medicine
Doctor of Medicine (M.D.)
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.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 645 E MISSOURI AVE STE 300, PHOENIX, AZ 850121351 (Tel: 6022628900)
Registered at 645 E MISSOURI AVE STE 300, PHOENIX, AZ 850121351 (Tel: 6022628917)
Pain Medicine (license number reported to NPPES: AZ 31465)
NPI status registered as active in NPPES database
Registered at 1850 N CENTRAL AVE, STE 1600, PHOENIX, AZ 850044633 (Tel: 6027444765)
Registered at 1850 N CENTRAL AVE, STE 1600, PHOENIX, AZ 850044633 (Tel: 6027444765)
Recorded as MARK SPIRO, MD
Anesthesiology (license number reported to NPPES: AZ 31465)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Anesthesiology Specialists in Phoenix
- Dr. Michael Dulitz, MD
- Dr. Sara Hall, MD
- Dr. Terence Mealman, MD
- Christopher Lee
- Dr. Alexandra Fox, MD
- Dr. Shailee Kavathia, MD
More public profiles in Arizona
Directory navigation, in NPI number order.
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Mailing Address
645 E Missouri Ave Ste 300
Phoenix, AZ 850121351
Phone: 6022628917