Dr. Joshua Fields , MD
Internal Medicine โข Nellis Afb, NV
4700 Las Vegas Blvd N
Nellis Afb, NV 891916600
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. Joshua Fields is listed in NPPES under Internal Medicine.
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NPI assigned on April 23, 2015; this date does not establish years in practice.
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Published CMS data list 620 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:
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 306 service units.
- 99223 โ Initial hospital care with moderate level of medical decision making: 101 service units.
- 99238 โ Hospital discharge day management: 93 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 7 records in the table ยท Guide: How to read Medicare Part B data
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Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Nevada (2024, 693 clinicians with data). Median for this group: 650. Middle half: 242 to 1,383.
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 11 in 2018 to 620 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2018โ2024.
Practice Location & Contact Primary Location
4700 Las Vegas Blvd N
Nellis Afb, NV 891916600
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 6 distinct additional practice-address records in Henderson, NV; Las Vegas, NV. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Dignity Health Medical Group Nevada Llc; Unlv Medicine. 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
2015
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
291 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 $58,333 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 $44,255 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)
Fewer than 11 payment records totaling $16.53 in 2024
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 2024.
Years since graduation
11 years (graduated 2015)
CMS Doctors and Clinicians data list 2015 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
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.
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. Fields 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. Fields 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 Nellis Afb and Nevada
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Internal Medicine in Nevada (2024, 693 clinicians with data). Median for this group: 650. Middle half: 242 to 1,383.
Too few clinicians listed under Internal Medicine in Nellis Afb have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for 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.
Too few clinicians listed under Internal Medicine in Nellis Afb have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for 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.
Too few clinicians listed under Internal Medicine in Nellis Afb have Medicare Part B data for 2024 to compare.
23 active clinicians are listed under Internal Medicine with a practice address in Nellis Afb, NV (1,229 in Nevada).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Nellis Afb
4.3% of these 23 clinicians have the CMS telehealth indicator.
26.1% of these 23 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 went from 11 in 2018 to 620 in 2024.
- 2018: 11
- 2019: 30
- 2023: 24
- 2024: 620
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Medicare-allowed amount
Medicare-allowed amount went from $749 in 2018 to $58,333 in 2024.
- 2018: $749
- 2019: $1,630
- 2023: $1,883
- 2024: $58,333
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Paid by Medicare
Paid by Medicare went from $597 in 2018 to $44,255 in 2024.
- 2018: $597
- 2019: $1,123
- 2023: $1,437
- 2024: $44,255
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $106.54 in 2019 to $16.53 in 2024.
- 2019: $106.54
- 2024: $16.53
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (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.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 โ December 31, 2024): fewer than 11 records totaling $16.53.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FASENRA | General | $16.53 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ2023 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, 2018โ2024; 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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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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306 | 168 | $209.86 | $75.76 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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101 | 96 | $499.41 | $166.90 |
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99238
Hospital discharge day management, 30 minutes or less
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93 | 86 | $279.23 | $78.24 |
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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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42 | 20 | $143.90 | $47.50 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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34 | 29 | $286.00 | $114.11 |
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99239
Hospital discharge day management, more than 30 minutes
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25 | 25 | $382.72 | $110.45 |
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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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19 | 19 | $370.42 | $125.35 |
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
Self-certified to NPPES: 2026-06-23NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 208M00000X
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20230906003947
NV
2961712302
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
Unlv Medicine
1707 W Charleston Blvd, Las Vegas, NV 891022353
Phone: 7026716412
Dignity Health Medical Group Nevada Llc
8689 W Charleston Blvd, Las Vegas, NV 891175485
Phone: 7023045900
Secondary Practice Locations
8280 W Warm Springs Rd
Las Vegas, NV 891133612
Phone: 7024928592
1800 W Charleston Blvd
Las Vegas, NV 891022329
Phone: 7023832000
102 E Lake Mead Pkwy
Henderson, NV 890155575
Phone: 7024928592
3001 Saint Rose Pkwy
Henderson, NV 890523839
Phone: 7024928592
4505 S Maryland Pkwy
Las Vegas, NV 891549900
Phone: 7028953011
1707 W Charleston Blvd Ste 230
Las Vegas, NV 891022353
Phone: 7026716469
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Social Worker - Clinical
Licensed Clinical Social Worker
Emergency Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Doctor of Nursing Practice, Certified Registered Nurse Anesthetist
Physical Therapist
Doctor of Physical Therapy
Nurse Practitioner - Family
Advanced Practice Registered Nurse
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Internal Medicine (license number reported to NPPES: NV 24158)
Hospitalist (license number reported to NPPES: NV 24158)
Registered at 4700 LAS VEGAS BLVD N, NELLIS AFB, NV 891916600 (Tel: 7026532273)
Registered at 4700 LAS VEGAS BLVD N, NELLIS AFB, NV 891916600 (Tel: 7026532273)
Internal Medicine (license number reported to NPPES: NV 24158)
Registered at RAF LAKENHEATH 48 MDG/SGHC, UNIT 5115, APO, AE 094615115 (Tel: 8002268232)
Registered at RAF LAKENHEATH 48 MDG/SGHC, UNIT 5115, APO, AE 094615115
Registered at RAF LAKENHEATH 48 MDG/SGHC, UNIT 5115, APO, AE 09461-5115 (Tel: 8002268232)
Registered at RAF LAKENHEATH 48 MDG/SGHC, UNIT 5115, APO, AE 09461-5115
Internal Medicine (license number reported to NPPES: MS 26213)
NPI status registered as active in NPPES database
Registered at 301 FISHER ST RM 1F325, KEESLER AFB, MS 395342508 (Tel: 8013679532)
Registered at 301 FISHER ST RM 1F325, KEESLER AFB, MS 395342508 (Tel: 8013679532)
Recorded as JOSHUA FIELDS, M.D.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Nellis Afb
- Dr. Huiling Wolff-Koo, MD
- Dana Hoffman
- Dr. Jared Joffer, DO
- Dr. Nicholas Symons, MD
- Dr. David Shepard, MD
- Dr. Andrew Mensah, MD
Mailing Address
4700 Las Vegas Blvd N
Nellis Afb, NV 891916600
Phone: 7026532273