Dr. Mark Edward Van Wormer , MD
General Practice • Clayton, NM
314 N 3rd Ave
Clayton, NM 884153302
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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Dr. Mark Van Wormer is listed in NPPES under General Practice.
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NPI assigned on August 10, 2005; this date does not establish years in practice.
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Published CMS data list 1,191 Original Medicare Part B services in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Published rows only; this is not a quality measure.
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Published Part B service records, 2018:
- 99212 — Established patient outpatient office visit: 423 service units.
- 99213 — Established patient outpatient office visit: 264 service units.
- 99283 — Emergency department visit with low level of medical decision making: 113 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2017 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2018). CPT notice
See all 16 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 8,611 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Potassium Chloride — 429 prescription fills, including refills.
- Lisinopril — 351 prescription fills, including refills.
- Levothyroxine Sodium — 349 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 152 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 95% of clinicians listed under General Practice in New Mexico (2024, 32 clinicians with data). Median for this group: 257. Middle half: 58 to 2,086.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 13 in 2017 to 1,191 in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2018.
Practice Location & Contact Primary Location
314 N 3rd Ave
Clayton, NM 884153302
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: Clayton Health Systems 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
1980
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $67,156 in 2018
The total amount Medicare approved for these services in 2018. 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 – by Provider and Service, 2018.
Paid by Medicare
About $49,256 in 2018
The part of the Medicare-allowed amount that Medicare itself paid in 2018, 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 – by Provider and Service, 2018.
30-day fills
11,591 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
$736,716 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $37.33 across 2 records.
By nature of payment
- Food and Beverage: $37.33 across 2 records.
Reporting-company totals
- Insulet Corporation: $21.58 across 1 record.
- Merck Sharp & Dohme LLC: $15.75 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
46 years (graduated 1980)
CMS Doctors and Clinicians data list 1980 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, “Does your provider accept Medicare as full payment?”
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. Van Wormer 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. Van Wormer 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 Clayton and New Mexico
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under General Practice in New Mexico (2024, 32 clinicians with data). Median for this group: 257. Middle half: 58 to 2,086.
Too few clinicians listed under General Practice in Clayton have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under General Practice in New Mexico (2024, 32 clinicians with data). Median for this group: $5,830. Middle half: $1,130 to $118,449.
Too few clinicians listed under General Practice in Clayton have Medicare Part D data for 2024 to compare.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Van Wormer are from 2018.
1 active clinicians are listed under General Practice with a practice address in Clayton, NM (103 in New Mexico).
Addresses are self-reported to NPPES and may be out of date.
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 went from 13 in 2017 to 1,191 in 2018.
- 2017: 13
- 2018: 1,191
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Medicare-allowed amount
Medicare-allowed amount went from $528 in 2017 to $67,156 in 2018.
- 2017: $528
- 2018: $67,156
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Paid by Medicare
Paid by Medicare went from $419 in 2017 to $49,256 in 2018.
- 2017: $419
- 2018: $49,256
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 10% from 9,518 in 2020 to 8,611 in 2024.
- 2020: 9,518
- 2021: 9,541
- 2022: 9,014
- 2023: 8,392
- 2024: 8,611
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30-day fills
30-day fills stayed about the same: 11,771 in 2020 and 11,591 in 2024.
- 2020: 11,771
- 2021: 12,068
- 2022: 11,805
- 2023: 11,697
- 2024: 11,591
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Part D drug cost
Part D drug cost varied from year to year: $737,477 in 2020 and $736,716 in 2024.
- 2020: $737,477
- 2021: $866,809
- 2022: $1,071,875
- 2023: $1,011,620
- 2024: $736,716
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $82.43 in 2019 to $37.33 in 2025.
- 2019: $82.43
- 2023: $139.42
- 2025: $37.33
Sources: CMS Medicare Physician & Other Practitioners (2018), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 – December 31, 2025): fewer than 11 records totaling $37.33.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Insulet Corporation |
Food and Beverage
Cash or cash equivalent
|
Omnipod | General | $21.58 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
VERQUVO | General | $15.75 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2017 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 – by Provider and Service data, 2017–2018; 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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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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423 | 200 | $89.70 | $42.05 |
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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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264 | 141 | $118.84 | $70.36 |
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99283
Emergency department visit with low level of medical decision making
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113 | 93 | $266.73 | $61.78 |
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99284
Emergency department visit with moderate level of medical decision making
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53 | 42 | $326.06 | $117.25 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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47 | 38 | $30.75 | $1.81 |
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99282
Emergency department visit with straightforward medical decision making
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42 | 39 | $103.77 | $41.35 |
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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35 | 26 | $108.00 | $67.62 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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34 | 29 | $362.33 | $127.57 |
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20610
Aspiration and/or injection of fluid from large joint
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30 | 25 | $205.00 | $60.60 |
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99238
Hospital discharge day management, 30 minutes or less
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29 | 26 | $244.14 | $71.43 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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28 | 16 | $135.00 | $38.60 |
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99307
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes
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25 | 19 | $87.00 | $43.45 |
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G0008
Administration of influenza virus vaccine
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25 | 25 | $14.00 | $13.32 |
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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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17 | 16 | $177.00 | $103.77 |
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90662
Influenza vaccine split virus, preservative free
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14 | 14 | $114.75 | $50.66 |
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90688
Influenza vaccine, quadrivalent, 0.5 ml dosage
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12 | 12 | $31.75 | $17.48 |
Source: CMS Part B by Provider and Service, 2018; 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 |
|---|---|---|---|---|---|
| Potassium Chloride | Potassium Chloride | 429 | 15,191 | $6,666.59 | 74 |
| Lisinopril | Lisinopril | 351 | 14,910 | $2,135.38 | 53 |
| Levothyroxine Sodium | Levothyroxine Sodium | 349 | 12,682 | $4,496.71 | 49 |
| Eliquis | Apixaban | 322 | 8,004 | $156,560.89 | 38 |
| Omeprazole | Omeprazole | 234 | 11,391 | $2,194.76 | 48 |
| Atorvastatin Calcium | Atorvastatin Calcium | 233 | 12,092 | $2,741.55 | 45 |
| Gabapentin | Gabapentin | 210 | 8,352 | $2,761.54 | 41 |
| Pregabalin | Pregabalin | 202 | 6,406 | $4,894.19 | 32 |
| Carvedilol | Carvedilol | 188 | 8,259 | $1,891.89 | 37 |
| Amlodipine Besylate | Amlodipine Besylate | 184 | 9,109 | $1,653.76 | 36 |
| Losartan Potassium | Losartan Potassium | 166 | 7,958 | $2,103.40 | 29 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 164 | 5,256 | $3,496.98 | 26 |
| Metformin Hcl | Metformin Hcl | 161 | 7,428 | $1,591.54 | 28 |
| Furosemide | Furosemide | 159 | 5,699 | $867.91 | 35 |
| Jardiance | Empagliflozin | 149 | 4,310 | $85,828.71 | 25 |
| Clopidogrel | Clopidogrel Bisulfate | 141 | 7,247 | $1,585.86 | 26 |
| Tamsulosin Hcl | Tamsulosin Hcl | 131 | 5,680 | $1,468.81 | 23 |
| Meloxicam | Meloxicam | 111 | 3,810 | $649.81 | 23 |
| Pantoprazole Sodium | Pantoprazole Sodium | 111 | 4,158 | $1,587.32 | 20 |
| Metoprolol Succinate | Metoprolol Succinate | 109 | 4,891 | $1,604.66 | 20 |
| Sotalol | Sotalol Hcl | 109 | 3,862 | $2,355.05 | 15 |
| Tramadol Hcl | Tramadol Hcl | 102 | 3,015 | $768.42 | 23 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 100 | 5,190 | $1,541.51 | 26 |
| Alprazolam | Alprazolam | 98 | 2,860 | $702.68 | 17 |
| Trulicity | Dulaglutide | 96 | 2,393 | $81,379.16 | 13 |
(top 25 shown)
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
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL PRACTICE
I20081210000476
NM
4183785041
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
Clayton Health Systems Inc
314 N 3rd Ave, Clayton, NM 884153302
Phone: 5053742273
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated August 10, 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
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Mailing Address
314 N 3rd Ave
Clayton, NM 884153302
Phone: 5753748313