DR. RALPH CRISS ARMSTRONG JR. M.D.
NPI 1417975731
Family Medicine in Grenada, MS

Q: What is Ralph Armstrong's NPI number?

The NPI number for Ralph Armstrong is 1417975731. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Q: What is Ralph Armstrong's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Ralph Armstrong was last updated on June 28, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 July 17, 2006PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

1300 SUNSET DR, SUITE F, GRENADA, MS 38901(662) 226-5747(662) 226-5622 Get Directions Write a Review

NPPES record last updated: June 28, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Ralph Criss Armstrong Jr. M.d. NPPES

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

DR. RALPH CRISS ARMSTRONG JR. M.D. (NPI 1417975731) is an individual family medicine provider in Grenada, Mississippi, licensed in Mississippi (12471) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Baptist Memorial Hospital North Ms, and is a graduate of University Of Mississippi School Of Medicine (1984).

NPPES Registry Identity

NPI1417975731

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. RALPH CRISS ARMSTRONG JR.Credential: M.D.

Location Address1300 SUNSET DR, SUITE FGrenada, MS 38901-4086

Mailing Address1300 Sunset Dr, Suite FGrenada, MS 38901-4086 · (662) 226-5747 · Fax (662) 226-5622

Phone(662) 226-5747

Fax(662) 226-5622

Sole ProprietorNo

Medical School CMSUniversity Of Mississippi School Of MedicineGraduated 1984

Enumeration DateJuly 17, 2006

Last NPPES UpdateJune 28, 2010

✔ NPI 1417975731 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in MS · 12471

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1300 SUNSET DR, Grenada, MS 38901

Open in Google Maps ↗

Other Identifiers 10

Medicare PIN080001499MS

Medicaid09014826MS

Other080170280MS · Railroad Medicare

Other640835695MS · Bc/bs Of Mississippi

Other1700994738MS · Pecos

Medicaid09013778MS

Medicaid0112659MS

OtherCH9466MS · Railroad Medicare

Medicare UPINE48017MS

Medicare PINC00907MS

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter Health 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

Dr. Ralph Criss Armstrong Jr. 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 ID5496707317

PECOS Enrollment IDI20120131000576

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 Reassignment

Medicare enrollment records show Ralph Armstrong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

State Of Mississippi-University Of Mississippi Medical Center

0.4 mi

Family Medicine

965 AVENT DR, SUITE 100A
Grenada, MS 38901

Reassigned Medicare billing, Mississippi enrollment
1,932 clinicians in this Medicare group

NPI 1932538527 (662) 227-7444

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 22

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.

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.

1,244 services334 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.

830 services311 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

250 services250 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

248 services248 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

149 services52 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

100 services100 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

97 services48 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

93 services93 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

92 services19 patients

Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a G0179

This procedure involves a doctor or approved practitioner reviewing your health status and re-certifying your need for Medicare-covered home health services. It includes communication with the home health agency and assessment of your health reports, even when you're not physically present.

88 services41 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

76 services35 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

56 services49 patients

Injection, ceftriaxone sodium, per 250 mg J0696

Ceftriaxone sodium is an antibiotic injection used to treat a variety of bacterial infections. Each injection contains 250 mg of the medicine. It works by stopping the growth of bacteria in your body.

53 services23 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426

An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.

45 services41 patients

Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702

This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.

42 services28 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.

39 services34 patients

Smoking and tobacco use intensive counseling, 4-10 minutes 99406

This service provides brief, intensive counseling (4-10 minutes) to support you in quitting smoking or tobacco use. It involves discussing the risks of tobacco use, benefits of quitting, and strategies to help you stop. It's a critical step towards a healthier lifestyle.

34 services20 patients

Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 87880

A detection test by immunoassay for Group A Strep is a quick procedure to identify a bacterial infection in your throat. It involves taking a throat swab and applying it to a test strip, which changes color if Strep bacteria are present.

16 services15 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

15 services15 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

15 services13 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

15 services15 patients

Stool analysis for blood to screen for colon tumors 82270

A stool analysis for blood is a non-invasive procedure used to check for the presence of hidden blood in your stool. This can be an early sign of colon tumors. The test involves collecting a small sample of stool at home and sending it to a lab for analysis.

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.

Baptist Memorial Hospital North Ms

Acute Care Hospitals · Oxford, MS

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number250034

Location1100 Belk Blvd /Po Box 946Oxford, MS 38655 · Lafayette County

Emergency services Birthing friendly

University Of Mississippi Medical Center- Grenada

Acute Care Hospitals · Grenada, MS

3/5 CMS rating

OwnershipGovernment - State

CMS Certification Number250168

Location960 Avent DriveGrenada, MS 38901 · Grenada County

Emergency services Birthing friendly

Tyler Holmes Memorial Hospital Cah

Critical Access Hospitals · Winona, MS

OwnershipGovernment - Local

CMS Certification Number251312

Location409 Tyler Holmes DriveWinona, MS 38967 · Montgomery County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 38901 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

$80.50 typical visit price

range $51.65 – $159.18

Typical copayment $20.12 (range $12.91 – $39.79)

Most-billed visit code 99203

Established Patient

$92.20 typical visit price

range $16.15 – $129.61

Typical copayment $23.05 (range $4.03 – $32.40)

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.

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.

75/100

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

Individually scored

Referred Medical Equipment & Supplies CMS DME claims 14

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

8 suppliers85 claims194 services$6.17 avg. paid by Medicare

Normal, low and high calibrator solution / chips A4256

DME-Other DME · category DE000N

4 suppliers13 claims15 services$2.74 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

8 suppliers59 claims65 services$1.07 avg. paid by Medicare

Enteral feeding supply kit; syringe fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4034

Other-Enteral and Parenteral · category OB006N

1 supplier12 claims360 services$4.15 avg. paid by Medicare

Enteral formula, nutritionally complete, for special metabolic needs, excludes inherited disease of metabolism, includes altered composition of proteins, fats, carbohydrates, vitamins and/or minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4154

Other-Enteral and Parenteral · category OB006N

1 supplier12 claims5,400 services$0.82 avg. paid by Medicare

Commode chair, extra wide and/or heavy duty, stationary or mobile, with or without arms, any type, each E0168

DME-Other DME · category DE000N

1 supplier15 claims15 services$12.59 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

W. BOYD MASSEY, M.D., P.A.

Otolaryngology

1300 SUNSET DR, SUITE R
GRENADA, MS 38901

Grenada County (662) 227-1695

DR. JOHN EDWARD SEIBEL JR. MD

Internal Medicine (Cardiovascular Disease)

1300 SUNSET DR, STE W
GRENADA, MS 38901

Grenada County (901) 767-3123

GEORGE M MILLER JR MD PC

Surgery

1300 SUNSET DR, SUITE R
GRENADA, MS 38901

Grenada County (662) 226-7540

LATIA MONANETTE BUTTS CFNP

Nurse Practitioner

1300 SUNSET DR, STE Q
GRENADA, MS 38901

Grenada County (662) 294-9101

GRENADA DIAGNOSTIC RADIOLOGY

Clinic/Center

1300 SUNSET DR, SUITE U
GRENADA, MS 38901

Grenada County (662) 226-9279

MR. CHARLES EDWARD HILL II B.S.PHYSICAL THERAPY

Physical Therapist

1300 SUNSET DR, STE G
GRENADA, MS 38901

Grenada County (662) 227-9748

GRENADA CARDIOLOGY LLC

Internal Medicine (Cardiovascular Disease)

1300 SUNSET DR, SUITE W
GRENADA, MS 38901

Grenada County (662) 227-9991

RALPH T CAIN FNP

Nurse Practitioner (Family)

1300 SUNSET DR, STE Q
GRENADA, MS 38901

Grenada County (662) 294-9101

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 Ralph Armstrong's NPI number?

The NPI number for Ralph Armstrong is 1417975731. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is Ralph Armstrong located?

Ralph Armstrong practices at 1300 Sunset Dr Suite F, Grenada, MS 38901. The listed phone number is (662) 226-5747.

What is Ralph Armstrong's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Ralph Armstrong enrolled in Medicare?

Yes. Ralph Armstrong 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 organization bills Medicare for Ralph Armstrong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ralph Armstrong reassigns Medicare benefits to State Of Mississippi-University Of Mississippi Medical Center (Grenada, MS). The 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 Ralph Armstrong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ralph Armstrong accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 2 other insurers list Ralph Armstrong 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 Ralph Armstrong affiliated with any hospitals?

According to CMS data, Ralph Armstrong is affiliated with Baptist Memorial Hospital North Ms, University Of Mississippi Medical Center- Grenada and Tyler Holmes Memorial Hospital Cah.

When was this NPI record last updated?

The NPPES record for Ralph Armstrong was last updated on June 28, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.