Dr. David Alex Stalker , MD
Surgery • Clovis, NM
233 Fairway Ter N Ste B
Clovis, NM 88101
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 May 9, 2006; this date does not establish years in practice.
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Published CMS data list 306 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99214 — Established patient outpatient office visit: 89 service units.
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 55 service units.
- 99306 — Initial nursing facility care with high level of medical decision making, per day: 42 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See all 10 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 201 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:
- Amlodipine Besylate — 42 prescription fills, including refills.
- Clopidogrel (Clopidogrel Bisulfate) — 24 prescription fills, including refills.
- Memantine Hcl — 21 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 12 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 80% of clinicians listed under Surgery in New Mexico (2024, 74 clinicians with data). Median for this group: 61. Middle half: 28 to 137.
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 1,726 in 2017 to 306 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2021.
Practice Location & Contact Primary Location
233 Fairway Ter N Ste B
Clovis, NM 88101
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $33,129 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $21,110 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
201 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
$6,599 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $14.96 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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.
Compared with the same specialty in Clovis and New Mexico
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Surgery in New Mexico (2024, 74 clinicians with data). Median for this group: 61. Middle half: 28 to 137.
Too few clinicians listed under Surgery in Clovis 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 Surgery in New Mexico (2024, 74 clinicians with data). Median for this group: $589. Middle half: $177 to $1,810.
Too few clinicians listed under Surgery in Clovis have Medicare Part D data for 2024 to compare.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Stalker are from 2021.
7 active clinicians are listed under Surgery with a practice address in Clovis, NM (237 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 decreased 82% from 1,726 in 2017 to 306 in 2021.
- 2017: 1,726
- 2018: 1,300
- 2019: 1,277
- 2020: 849
- 2021: 306
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Medicare-allowed amount
Medicare-allowed amount decreased 82% from $181,977 in 2017 to $33,129 in 2021.
- 2017: $181,977
- 2018: $147,712
- 2019: $138,590
- 2020: $93,590
- 2021: $33,129
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Paid by Medicare
Paid by Medicare decreased 83% from $127,346 in 2017 to $21,110 in 2021.
- 2017: $127,346
- 2018: $104,652
- 2019: $105,911
- 2020: $67,134
- 2021: $21,110
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 95% from 4,367 in 2020 to 201 in 2024.
- 2020: 4,367
- 2021: 4,083
- 2022: 2,197
- 2023: 837
- 2024: 201
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30-day fills
30-day fills decreased 96% from 5,150 in 2020 to 201 in 2024.
- 2020: 5,150
- 2021: 4,666
- 2022: 2,247
- 2023: 837
- 2024: 201
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Part D drug cost
Part D drug cost decreased 96% from $173,950 in 2020 to $6,599 in 2024.
- 2020: $173,950
- 2021: $171,017
- 2022: $83,850
- 2023: $37,398
- 2024: $6,599
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $41.50 in 2021 to $14.96 in 2025.
- 2021: $41.50
- 2025: $14.96
Sources: CMS Medicare Physician & Other Practitioners (2021), 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 $14.96.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $14.96 |
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 2016–2020 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, 2017–2021; 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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89 | 74 | $227.00 | $124.99 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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55 | 42 | $205.00 | $88.17 |
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99306
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
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42 | 39 | $317.00 | $162.12 |
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G0180
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
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25 | 25 | $150.00 | $50.74 |
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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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24 | 18 | $142.00 | $66.96 |
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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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17 | 17 | $354.00 | $155.99 |
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99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
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17 | 14 | $279.00 | $130.93 |
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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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13 | 13 | $158.00 | $88.51 |
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99318
Nursing facility annual assessment, typically 30 minutes
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13 | 13 | $205.00 | $92.91 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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11 | 11 | $86.00 | $21.38 |
Source: CMS Part B by Provider and Service, 2021; 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 |
|---|---|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 42 | 1,250 | $518.90 | — |
| Clopidogrel | Clopidogrel Bisulfate | 24 | 720 | $369.12 | — |
| Memantine Hcl | Memantine Hcl | 21 | 630 | $2,447.88 | — |
| Ropinirole Hcl | Ropinirole Hcl | 15 | 389 | $1,509.39 | — |
| Gabapentin | Gabapentin | 14 | 420 | $172.94 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 13 | 390 | $197.73 | — |
| Omeprazole | Omeprazole | 13 | 390 | $237.12 | — |
| Atorvastatin Calcium | Atorvastatin Calcium | 12 | 360 | $192.12 | — |
| Citalopram Hbr | Citalopram Hydrobromide | 12 | 360 | $118.68 | — |
| Donepezil Hcl | Donepezil Hcl | 12 | 360 | $457.11 | — |
| Furosemide | Furosemide | 12 | 168 | $59.35 | — |
| Oxybutynin Chloride | Oxybutynin Chloride | 11 | 330 | $318.23 | — |
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: 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.
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
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.), FACS, DABOM
Surgery
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 233 FAIRWAY TER N STE B, CLOVIS, NM 88101 (Tel: 5757627779)
Registered at 233 FAIRWAY TER N STE B, CLOVIS, NM 881013060 (Tel: 5757627779)
NPI status registered as active in NPPES database
Registered at 1427 SUTTER PL, CLOVIS, NM 881014648 (Tel: 5757627779)
Registered at PO BOX 833, CLOVIS, NM 881020833 (Tel: 5757627779)
Recorded as DAVID STALKER, MD
Surgery (license number reported to NPPES: NM 87-389)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Clovis
- Dr. Albert Kwan, MD
- Dr. Ahmad Othman, MD
- Dr. Abi James, MD, FACS, DABOM
- Dr. Raul Lugo, MD
- Dr. Jeffrey Durgin, MD
- Dr. Fred Hammill, MD
Mailing Address
Po Box 833
Clovis, NM 881020833
Phone: 5757627779