DIANA M. ALVAREZ M.D.
NPI 1285096099
Internal Medicine - Cardiovascular Disease in Chattanooga, TN

Q: What is Diana Alvarez's NPI number?

The NPI number for Diana Alvarez is 1285096099. It was assigned to this individual provider in the NPPES registry on March 22, 2016.

Q: What is Diana Alvarez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Diana Alvarez was last updated on December 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since March 22, 2016PECOS EnrolledAccepts Medicare Assignment

96.19/100

CMS Quality Rating

979 E 3RD ST STE C520, CHATTANOOGA, TN 37403(423) 778-5661 Get Directions Write a Review

NPPES record last updated: December 25, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 25, 2022, Jun 8, 2022, Mar 22, 2016 (3 updates tracked since 2016).

On this page

About Diana M. Alvarez M.d. NPPES

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

DIANA M. ALVAREZ M.D. (NPI 1285096099) is an individual cardiovascular disease provider in Chattanooga, Tennessee, licensed in Tennessee (65357) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, is affiliated with Memorial Healthcare System, Inc, and maintains a secondary practice location in Savannah.

NPPES Registry Identity

NPI1285096099

Entity TypeIndividualFemale

Primary Taxonomy207RC0000X

Provider Legal NameDIANA M. ALVAREZCredential: M.D.

Location Address979 E 3RD ST STE C520Chattanooga, TN 37403-2136

Mailing Address1770 Urban Trl Apt 116Chattanooga, TN 37405-1542 · (786) 863-3355

Phone(423) 778-5661

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateMarch 22, 2016

Last NPPES UpdateDecember 25, 20223 updates tracked since enumeration

NPPES CertifiedDecember 25, 2022

✔ NPI 1285096099 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in TN · 65357

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

979 E 3RD ST STE C520, Chattanooga, TN 37403

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Secondary Practice Location 1

Location 14700 Waters Ave, Department of Internal Medicine EducationSavannah, GA 31404-6220 · Phone (912) 350-7573

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., BlueCross BlueShield of Tennessee, Cigna Healthcare and more.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

Diana M. Alvarez 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 ID5496049967

PECOS Enrollment IDI20220901001287

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

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

Erlanger Health

Same address

Internal Medicine

979 E 3RD ST STE A440
Chattanooga, TN 37403

Reassigned Medicare billing, Tennessee enrollment
679 clinicians in this Medicare group

NPI 1477256303 (423) 778-2867

Chattanooga Hamilton County Hospital Authority

0.1 mi

Internal Medicine

975 E 3RD ST
Chattanooga, TN 37403

Reassigned Medicare billing, Tennessee enrollment
533 clinicians in this Medicare group

NPI 1407034028 (423) 266-1490

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 15

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.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

242 services240 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.

165 services68 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

151 services101 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

67 services64 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

54 services53 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

49 services49 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

45 services40 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.

38 services38 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

30 services30 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

24 services23 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

22 services22 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

21 services21 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.

20 services20 patients

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.

17 services12 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Memorial Healthcare System, Inc

Acute Care Hospitals · Chattanooga, TN

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number440091

Location2525 Desales AveChattanooga, TN 37404 · Hamilton County

Erlanger Medical Center

Acute Care Hospitals · Chattanooga, TN

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440104

Location975 E 3rd StChattanooga, TN 37403 · Hamilton County

Emergency services Birthing friendly

Erlanger Bledsoe Hospital

Critical Access Hospitals · Pikeville, TN

OwnershipGovernment - Hospital District or Authority

CMS Certification Number441306

Location71 Wheelertown AvenuePikeville, TN 37367 · Bledsoe County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37403 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$66.01 typical visit price

range $16.72 – $131.41

Typical copayment $16.50 (range $4.18 – $32.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

96.19/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

85.2

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 3

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

SHEEV MANOJ ZAVER MD

Student in an Organized Health Care Education/Training Program

979 E 3RD ST STE C520
CHATTANOOGA, TN 37403

Hamilton County (423) 778-7817

SUSAN ALEXANDRA NECAISE PA-C

Student in an Organized Health Care Education/Training Program

979 E 3RD ST STE C520
CHATTANOOGA, TN 37403

Hamilton County (423) 778-5661

RYLEE ELIZABETH WHITTAKER

Physician Assistant

979 E 3RD ST STE C520
CHATTANOOGA, TN 37403

Hamilton County (423) 778-7000

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 Diana Alvarez's NPI number?

The NPI number for Diana Alvarez is 1285096099. It was assigned to this individual provider in the NPPES registry on March 22, 2016.

Where is Diana Alvarez located?

Diana Alvarez practices at 979 E 3rd St Ste C520, Chattanooga, TN 37403. The listed phone number is (423) 778-5661.

What is Diana Alvarez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Diana Alvarez enrolled in Medicare?

Yes. Diana Alvarez 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 Diana Alvarez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Alvarez reassigns Medicare benefits to 2 organizations: Erlanger Health (Chattanooga, TN) and Chattanooga Hamilton County Hospital Authority (Chattanooga, TN). 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 Diana Alvarez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diana Alvarez accept?

Health plans from Alliant Health Plans, Inc., BlueCross BlueShield of Tennessee, Cigna Healthcare and UnitedHealthcare list Diana Alvarez 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 Diana Alvarez affiliated with any hospitals?

According to CMS data, Diana Alvarez is affiliated with Memorial Healthcare System, Inc, Erlanger Medical Center and Erlanger Bledsoe Hospital.

When was this NPI record last updated?

The NPPES record for Diana Alvarez was last updated on December 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.