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MR. JOSHUA FIELDS M.D.
NPI 1487041802
Internal Medicine in Nellis Afb, NV

Active since April 23, 2015PECOS EnrolledAccepts Medicare Assignment
4700 LAS VEGAS BLVD N, NELLIS AFB, NV 89191(702) 653-2273 Get Directions Write a Review

NPPES record last updated: June 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 11, 2025, Feb 19, 2025, Nov 2, 2023 and 6 more (9 updates tracked since 2018).

About Mr. Joshua Fields M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. JOSHUA FIELDS M.D. (NPI 1487041802) is an individual internal medicine provider in Nellis Afb, Nevada, licensed in Nevada (24158) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with University Medical Center, and maintains 6 additional practice locations.

NPPES Registry Identity

NPI1487041802
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMR. JOSHUA FIELDSCredential: M.D.
Location Address4700 LAS VEGAS BLVD NNellis Afb, NV 89191-6600
Mailing Address4700 Las Vegas Blvd NNellis Afb, NV 89191-6600 · (702) 653-2273
Phone(702) 653-2273
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateApril 23, 2015
Last NPPES UpdateJune 23, 20269 updates tracked since enumeration
NPPES CertifiedJune 23, 2026
✔ NPI 1487041802 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NV · 24158
Definition
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.
Also ListedHospitalistTaxonomy 208M00000X · License 24158 (NV)
4700 LAS VEGAS BLVD N, Nellis Afb, NV 89191
Open in Google Maps ↗

Secondary Practice Locations 6

Location 1102 E Lake Mead PkwyHenderson, NV 89015-5575 · Phone (702) 492-8592 · Fax (702) 492-8045
Location 21800 W Charleston BlvdLas Vegas, NV 89102-2329 · Phone (702) 383-2000
Location 34505 S Maryland PkwyLas Vegas, NV 89154-9900 · Phone (702) 895-3011
Location 41707 W Charleston Blvd Ste 230Las Vegas, NV 89102-2353 · Phone (702) 671-6469 · Fax (702) 671-5198
Location 58280 W Warm Springs RdLas Vegas, NV 89113-3612 · Phone (702) 492-8592 · Fax (702) 492-8045
Location 63001 Saint Rose PkwyHenderson, NV 89052-3839 · Phone (702) 492-8592 · Fax (702) 492-8045

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Joshua Fields M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961712302
PECOS Enrollment IDI20230906003947
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Joshua Fields reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Unlv Medicine
5.0 mi
Internal Medicine
3016 W CHARLESTON BLVD STE 100
Las Vegas, NV 89102
  • Reassigned Medicare billing, Nevada enrollment
  • 286 clinicians in this Medicare group
NPI 1407397235 (702) 895-0497
Dignity Health Medical Group Nevada, LLC
6.5 mi
Family Medicine
10001 S EASTERN AVE, SUITE 209
Henderson, NV 89052
  • Reassigned Medicare billing, Nevada enrollment
  • 143 clinicians in this Medicare group
NPI 1376805416 (702) 616-5865

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
306 services168 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
101 services96 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
93 services86 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
42 services20 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
34 services29 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
25 services25 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Medical Center

Acute Care Hospitals · Las Vegas, NV
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number290007
Location1800 W Charleston BlvdLas Vegas, NV 89102 · Clark County
Emergency services Birthing friendly

Saint Rose Dominican Hospitals - Rose De Lima

Acute Care Hospitals · Henderson, NV
OwnershipVoluntary non-profit - Private
CMS Certification Number290012
Location102 E Lake Mead DrHenderson, NV 89015 · Clark County
Emergency services

Saint Rose Dominican Hospitals - Siena Campus

Acute Care Hospitals · Henderson, NV
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number290045
Location3001 St Rose ParkwayHenderson, NV 89052 · Clark County
Emergency services Birthing friendly

Saint Rose Dominican Hospitals - San Martin Campus

Acute Care Hospitals · Las Vegas, NV
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number290053
Location8280 W Warm Springs RoadLas Vegas, NV 89113 · Clark County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89191 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$131.25 typical visit price
range $57.07 – $173.24
Typical copayment $32.81 (range $14.26 – $43.31)
Most-billed visit code 99204
Established Patient
$100.60 typical visit price
range $18.27 – $140.96
Typical copayment $25.15 (range $4.56 – $35.24)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DEBRA A KOENIGSBERGER MD
Integrative Medicine
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-2267
KATRINA BAUMANN DPT
Physical Therapist (Orthopedic)
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-2273
SOUKAINA NOOR MD
Psychiatry & Neurology (Neurology)
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-2273
EDWARD KEMPTON MD
Emergency Medicine
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-2273
DR. AARON JOSEPH WOLBRUECK DO
Internal Medicine
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-2273
MARIA M ARAQUE PHARMD
Pharmacist
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-3202
DR. SHUBHANG N MAZUMDAR M.D.
Internal Medicine
4700 LAS VEGAS BLVD N
NELLIS AFB, NV 89191
Clark County (702) 653-3800
CYNTHIA SCHMIDT PH.D.
Psychologist (Clinical)
4700 LAS VEGAS BLVD N, ATTN: CREDENTIALS OFFICE
NELLIS AFB, NV 89191
Clark County (702) 653-3067

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joshua Fields's NPI number?

The NPI number for Joshua Fields is 1487041802. It was assigned to this individual provider in the NPPES registry on April 23, 2015.

Where is Joshua Fields located?

Joshua Fields practices at 4700 Las Vegas Blvd N, Nellis Afb, NV 89191. The listed phone number is (702) 653-2273.

What is Joshua Fields's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Joshua Fields enrolled in Medicare?

Yes. Joshua Fields is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Joshua Fields's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joshua Fields reassigns Medicare benefits to 2 organizations: Unlv Medicine (Las Vegas, NV) and Dignity Health Medical Group Nevada, LLC (Henderson, NV). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joshua Fields's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joshua Fields accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Molina Healthcare list Joshua Fields as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Joshua Fields affiliated with any hospitals?

According to CMS data, Joshua Fields is affiliated with University Medical Center, Saint Rose Dominican Hospitals - Rose De Lima, Saint Rose Dominican Hospitals - Siena Campus and Saint Rose Dominican Hospitals - San Martin Campus.

When was this NPI record last updated?

The NPPES record for Joshua Fields was last updated on June 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.