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DR. MARWIN J MARTINEZ M.D.
NPI 1396784419
Emergency Medicine in Knoxville, TN

Active since June 05, 2006PECOS Enrolled
900 E OAK HILL AVE, KNOXVILLE, TN 37917(865) 545-8000 Get Directions Write a Review

NPPES record last updated: June 8, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Marwin J Martinez M.d. NPPES

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

DR. MARWIN J MARTINEZ M.D. (NPI 1396784419) is an individual emergency medicine provider in Knoxville, Tennessee, licensed in Texas (J3543) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396784419
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. MARWIN J MARTINEZCredential: M.D.
Location Address900 E OAK HILL AVEKnoxville, TN 37917-4522
Mailing Address200 Corporate BlvdLafayette, LA 70508-3870 · (800) 893-9698
Phone(865) 545-8000
Sole ProprietorYes
Enumeration DateJune 5, 2006
Last NPPES UpdateJune 8, 2021
NPPES CertifiedJune 8, 2021
✔ NPI 1396784419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in TX · J3543✔ Licensed in TN · BM2767272✔ Licensed in TN · MD25894
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
900 E OAK HILL AVE, Knoxville, TN 37917
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Other Identifiers 2

Medicaid3085766TN
Other3135998TN · Blue Cross

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CHRISTUS Health Plan, Oscar Health, Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marwin J Martinez M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

6

Medicare enrollment records show Marwin Martinez reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

App Of Tennessee Ed, PLLC
16 mi
Emergency Medicine
907 E LAMAR ALEXANDER PKWY
Maryville, TN 37804
  • Reassigned Medicare billing, Tennessee enrollment
  • 390 clinicians in this Medicare group
NPI 1003230236 (865) 983-7211
Emergency Coverage, LLC
43 mi
Family Medicine
435 2ND ST
Newport, TN 37821
  • Reassigned Medicare billing, Tennessee enrollment
  • 664 clinicians in this Medicare group
NPI 1427005008 (423) 625-2200
Tri-Cities Regional Emergency Physicians, PC
90 mi
Emergency Medicine
400 N STATE OF FRANKLIN RD
Johnson City, TN 37604
  • Reassigned Medicare billing, Tennessee enrollment
  • 284 clinicians in this Medicare group
NPI 1063950046 (423) 431-6111
Emergency Medicine Services Of Tn, PC
161 mi
Emergency Medicine
2300 PATTERSON ST
Nashville, TN 37203
  • Reassigned Medicare billing, Tennessee enrollment
  • 414 clinicians in this Medicare group
NPI 1720785884 (615) 342-1000
Southeastern Emergency Physicians LLC
184 mi
Emergency Medicine
989 MEDICAL PARK DR
Maysville, KY 41056
  • Reassigned Medicare billing, Tennessee enrollment
  • 1,071 clinicians in this Medicare group
NPI 1356379382 (606) 759-5311
Guadalupe Emergency Medicine Associates, PA
1,002 mi
Emergency Medicine
2500 E MAIN ST
Alice, TX 78332
  • Reassigned Medicare billing, Texas enrollment
  • 173 clinicians in this Medicare group
NPI 1114425220 (361) 661-8000

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 3

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
131 services125 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
43 services42 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37917 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
$81.53 typical visit price
range $52.64 – $160.89
Typical copayment $20.38 (range $13.16 – $40.22)
Most-billed visit code 99203
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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.

METRO KNOXVILLE HMA, LLC
Rehabilitation Unit
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-7793
METRO KNOXVILLE HMA, LLC
Pharmacy
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-8905
TINA ELAINE DOTY NP
Nurse Practitioner
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-7573
MS. TERESA LYNN MCCUSKER RD, LDN
Dietitian, Registered
900 E OAK HILL AVE, NUTRITIONAL SERVICES DEPARTMENT
KNOXVILLE, TN 37917
Knox County (865) 545-7610
MR. CHARLES RAY TANNER P.A.-C.
Physician Assistant
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-8000
MARK HOWARD P.A.
Physician Assistant
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 539-8018
SARAH ELIZABETH GREENWAY
Nurse Anesthetist, Certified Registered
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 331-2278
DR. JOHN BRUCE IRWIN M.D.
Emergency Medicine
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-8000

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 Marwin Martinez's NPI number?

The NPI number for Marwin Martinez is 1396784419. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is Marwin Martinez located?

Marwin Martinez practices at 900 E Oak Hill Ave, Knoxville, TN 37917. The listed phone number is (865) 545-8000.

What is Marwin Martinez's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Marwin Martinez enrolled in Medicare?

Yes. Marwin Martinez is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Marwin Martinez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marwin Martinez reassigns Medicare benefits to 6 organizations: App Of Tennessee Ed, PLLC (Maryville, TN), Emergency Coverage, LLC (Newport, TN), Tri-Cities Regional Emergency Physicians, PC (Johnson City, TN), Emergency Medicine Services Of Tn, PC (Nashville, TN), Southeastern Emergency Physicians LLC (Maysville, KY) and 1 more organization, listed in the Medicare section above. 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 Marwin Martinez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marwin Martinez accept?

Health plans from CHRISTUS Health Plan, Oscar Health and Oscar Insurance Company list Marwin Martinez 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.

When was this NPI record last updated?

The NPPES record for Marwin Martinez was last updated on June 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.