Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. John Allen Garrison , DO

Internal Medicine • Henderson, NV

Active NPI 1902284870 Individual Practitioner Male Practitioner Telehealth (some services)
Practice location in NPPES

2440 W Horizon Ridge Pkwy Ste 130
Henderson, NV 890522731

Call 7028818191 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

2440 W Horizon Ridge Pkwy Ste 130

Henderson, NV 890522731

Telephone 7028818191
Organization at the Same NPPES Address or Phone
Garrison Medical Consultants Pllc Facility NPI 1912534348

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 6 distinct group names: Cs Pacs 3 West Llc; Garrison Medical Consultants Pllc; Mana Medical Shlifer and 3 more. 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

Graduation Year

2015

Medicare patients

565 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $290,450 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.

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, 2024.

Paid by Medicare

About $229,651 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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, 2024.

30-day fills

121 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

$1,353 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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: $3,294.53 across 57 records.

By nature of payment

  • Food and Beverage: $1,640.29 across 49 records.
  • Travel and Lodging: $1,337.32 across 7 records.
  • Education: $316.92 across 1 record.

Reporting-company totals (3 largest of 9)

  • Kerecis Limited: $1,147.75 across 10 records.
  • Solventum Corporation: $991.27 across 23 records.
  • MIMEDX Group, Inc.: $707.08 across 12 records.

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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

11 years (graduated 2015)

CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional 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

2015

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.

May accept Medicare assignment

CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.

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?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Garrison 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Garrison 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Henderson and Nevada

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Henderson, NV (2024, 133 clinicians with data). Median for this group: 969. Middle half: 363 to 1,747.

More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Nevada (2024, 693 clinicians with data). Median for this group: 650. Middle half: 242 to 1,383.

Medicare-allowed amount

A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Henderson, NV (2024, 133 clinicians with data). Median for this group: $97,547. Middle half: $41,898 to $172,215.

A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Nevada (2024, 693 clinicians with data). Median for this group: $67,376. Middle half: $26,044 to $138,059.

Paid by Medicare

A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Henderson, NV (2024, 133 clinicians with data). Median for this group: $75,395. Middle half: $31,614 to $135,536.

A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Nevada (2024, 693 clinicians with data). Median for this group: $50,425. Middle half: $18,311 to $107,261.

Medicare Part D prescriptions

Fewer Part D prescriptions than 70% of clinicians listed under Internal Medicine in Henderson, NV (2024, 127 clinicians with data). Median for this group: 313. Middle half: 78 to 3,073.

Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in Nevada (2024, 735 clinicians with data). Median for this group: 643. Middle half: 137 to 3,956.

Part D drug cost

A lower Part D drug cost than 70% of clinicians listed under Internal Medicine in Henderson, NV (2024, 127 clinicians with data). Median for this group: $13,542. Middle half: $887 to $246,905.

A lower Part D drug cost than 75% of clinicians listed under Internal Medicine in Nevada (2024, 735 clinicians with data). Median for this group: $32,802. Middle half: $3,761 to $339,646.

181 active clinicians are listed under Internal Medicine with a practice address in Henderson, NV (1,229 in Nevada).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Henderson

17.1% of these 181 clinicians have the CMS telehealth indicator.

76.8% of these 181 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), 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

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 57 records totaling $3,294.53.

Manufacturer Payment Nature Product Type Amount ($)
Kerecis Limited
Travel and Lodging
Cash or cash equivalent
Kerecis SurgiClose General $378.95
Solventum Corporation
Travel and Lodging
Cash or cash equivalent
Bair Hugger General $339.29
Kerecis Limited
Education
Cash or cash equivalent
Kerecis SurgiClose General $316.92
MIMEDX Group, Inc.
Travel and Lodging
In-kind items and services
— General $283.86
Solventum Corporation
Travel and Lodging
Cash or cash equivalent
ACTIV.A.C. General $277.59
MIMEDX Group, Inc.
Food and Beverage
In-kind items and services
— General $183.58
Solventum Corporation
Food and Beverage
Cash or cash equivalent
ACTIV.A.C. General $125.00
ABBVIE INC.
Food and Beverage
In-kind items and services
DALVANCE General $124.17
Kerecis Limited
Food and Beverage
Cash or cash equivalent
Kerecis SurgiClose General $120.00
SK Life Science, Inc.
Food and Beverage
In-kind items and services
— General $118.92
Kerecis Limited
Food and Beverage
Cash or cash equivalent
Kerecis SurgiClose General $114.12
Kerecis Limited
Food and Beverage
Cash or cash equivalent
Kerecis SurgiClose General $99.75
MIMEDX Group, Inc.
Food and Beverage
In-kind items and services
— General $72.81
Kerecis Limited
Food and Beverage
Cash or cash equivalent
Kerecis SurgiClose General $69.20
Solventum Corporation
Food and Beverage
Cash or cash equivalent
ACTIV.A.C. General $65.23
Cook Medical LLC
Food and Beverage
Cash or cash equivalent
ZILVER PTX General $59.52
MIMEDX Group, Inc.
Food and Beverage
In-kind items and services
— General $39.08
MIMEDX Group, Inc.
Travel and Lodging
Cash or cash equivalent
— General $38.68
Solventum Corporation
Food and Beverage
Cash or cash equivalent
ACTIV.A.C. General $38.50
SK Life Science, Inc.
Food and Beverage
In-kind items and services
— General $29.98
Kerecis Limited
Food and Beverage
Cash or cash equivalent
Kerecis SurgiClose General $26.23
Paratek Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
NUZYRA General $21.41
Paratek Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
NUZYRA General $21.21
Solventum Corporation
Food and Beverage
Cash or cash equivalent
ACTIV.A.C. General $20.77
LifeNet Health
Food and Beverage
Cash or cash equivalent
TheraGenesis Wound Matrix General $20.50

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2023 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, 2019–2024; 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
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
1,106 198 $116.07 $72.01
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
655 116 $248.50 $75.90
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
277 129 $335.12 $103.90
99306 Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
139 137 $223.35 $175.68
99306 Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
124 117 $609.01 $175.32
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
87 52 $208.33 $103.99
11042 Removal of skin and tissue, 20.0 sq cm or less
85 55 $219.14 $57.78
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
83 80 $600.48 $166.74
99497 Advance care planning, first 30 minutes
64 64 $346.73 $72.30
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
54 18 $252.78 $176.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
50 16 $358.84 $93.84
97605 Therapy procedure using a special bandage and vacuum pump, surface area 50.0 sq cm or less
47 11 $96.47 $23.44
11045 Removal of skin and tissue, each additional 20.0 sq cm or less
45 14 $122.73 $23.99
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
43 15 $369.00 $114.03
11042 Removal of skin and tissue, 20.0 sq cm or less
39 21 $302.05 $125.13
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
39 22 $228.59 $71.47
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes
38 38 $441.53 $128.61
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
29 29 $429.66 $125.77
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes
28 25 $189.29 $128.64
99315 Nursing facility discharge day management, 30 minutes or less
25 24 $247.00 $78.30
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
22 15 $150.00 $124.92
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
22 16 $135.45 $47.62
11721 Removal of fingernails or toenails, 6 or more nails
20 20 $120.30 $43.44
11043 Removal of muscle and/or tissue, 20.0 sq cm or less
19 12 $825.68 $143.95
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
15 15 $400.00 $215.04

(top 25 shown)

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.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 25 1,630 $127.63 —
Levothyroxine Sodium Levothyroxine Sodium 21 522 $143.91 —
Memantine Hcl Memantine Hcl 16 480 $639.56 —
Pantoprazole Sodium Pantoprazole Sodium 13 342 $205.23 —
Tamsulosin Hcl Tamsulosin Hcl 11 314 $236.62 —

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: 2023-08-30
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES NV DO2406

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Nevada State Medical Licensing Board.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20191007002641

Enrollment State Jurisdiction

NV

PECOS Control ID

8426357864

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

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

Nevada Post-Acute Medical Services-Scherr 1 P.c

10550 Park Run Dr, Las Vegas, NV 891444575

Phone: 7025156200

Mana Medical Shlifer

2440 W Horizon Ridge Pkwy, Henderson, NV 890522731

Phone: 7252144237

Nv Pacs 2 Llc

10550 Park Run Dr, Las Vegas, NV 891444575

Phone: 7025156200

Garrison Medical Consultants Pllc

2440 W Horizon Ridge Pkwy, Henderson, NV 890522731

Phone: 7028818191

Cs Pacs 3 West Llc

700 Shadow Ln, Las Vegas, NV 891064185

Phone: 7026718660

Nevada Acute Medical Services-Scherr 1 Pc

4015 Mcleod Dr, Las Vegas, NV 891214305

Phone: 7024332200

Nevada Acute Medical Services-Scherr 1 Pc

1250 S Valley View Blvd, Las Vegas, NV 891021855

Phone: 7028778898

Cs Pacs 3 West Llc

6351 N Fort Apache Rd, Las Vegas, NV 891492300

Phone: 7025153000

Nevada Acute Medical Services-Scherr 1 Pc

2500 N Tenaya Way, Las Vegas, NV 891280482

Phone: 7025622021

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

1 listed
NPI 1811296585

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

12 Historical Events
📍
Updated Practice Location August 30, 2023

Registered at 2440 W HORIZON RIDGE PKWY STE 130, HENDERSON, NV 890522731 (Tel: 7028818191)

📍
Updated Business Mailing Address August 30, 2023

Registered at 2440 W HORIZON RIDGE PKWY STE 130, HENDERSON, NV 890522731 (Tel: 7028818191)

📍
Updated Practice Location October 16, 2019

Registered at 620 SHADOW LN, LAS VEGAS, NV 891064119 (Tel: 7023884000)

📍
Updated Business Mailing Address October 16, 2019

Registered at 5575 SIMMONS ST STE 1, NORTH LAS VEGAS, NV 890319008 (Tel: 7023042144)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 16, 2019

Internal Medicine (license number reported to NPPES: NV DO2406)

📍
Updated Practice Location April 16, 2018

Registered at 920 MADISON AVE SUITE 447, MEMPHIS, TN 381634194 (Tel: 9014485365)

✅
NPI Profile Active May 12, 2015

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) May 12, 2015

Registered at 620 SHADOW LANE, LAS VEGAS, NV 891064194 (Tel: 7023888436)

📍
Business Mailing Address (Initial Record) May 12, 2015

Registered at 620 SHADOW LANE, LAS VEGAS, NV 891064194 (Tel: 7023888436)

👤
Provider Name / Credentials (Initial Record) May 12, 2015

Recorded as JOHN GARRISON, D.O.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 12, 2015

Internal Medicine (license number reported to NPPES: NV SL1077)

🟢
Initial NPI Registration & Enumeration May 12, 2015

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1902284870
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 12, 2015
Last Update: August 30, 2023
Sole Proprietor: Yes

Other Internal Medicine Providers in Henderson

All Internal Medicine Providers in Henderson

Mailing Address

2440 W Horizon Ridge Pkwy Ste 130

Henderson, NV 890522731

Phone: 7028818191

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.