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CALVIN REED PLUMMER III AG-ACNP-BC
NPI 1821749367
Nurse Practitioner - Acute Care in San Antonio, TX

Active since January 17, 2022PECOS EnrolledAccepts Medicare Assignment
4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000 Get Directions Write a Review

NPPES record last updated: January 16, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 19, 2024, Aug 9, 2023, Jan 17, 2022 (3 updates tracked since 2022).

About Calvin Reed Plummer Iii Ag-acnp-bc NPPES

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

CALVIN REED PLUMMER III AG-ACNP-BC (NPI 1821749367) is an individual acute care provider in San Antonio, Texas, licensed in Texas (1064077) and active in the NPI registry since January 2022. He is enrolled in Medicare PECOS, is affiliated with Christus Spohn Hospital Corpus Christi, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1821749367
Entity TypeIndividualMale
Primary Taxonomy363LA2100X
Provider Legal NameCALVIN REED PLUMMER IIICredential: AG-ACNP-BC
Location Address4502 MEDICAL DRSan Antonio, TX 78229-4402
Mailing Address903 W Martin St # Ms 49-2San Antonio, TX 78207-0903 · (210) 358-5909 · Fax (210) 358-5940
Phone(210) 358-4000
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateJanuary 17, 2022
Last NPPES UpdateJanuary 16, 20253 updates tracked since enumeration
NPPES CertifiedJanuary 16, 2025
✔ NPI 1821749367 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License✔ Licensed in TX · 1064077
4502 MEDICAL DR, San Antonio, TX 78229
Open in Google Maps ↗

Accepted Insurance

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

Calvin Reed Plummer Iii Ag-acnp-bc 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 ID4082658554
PECOS Enrollment IDI20230217001047
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

5

Medicare enrollment records show Calvin Plummer reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Uthscsa Dental School
0.2 mi
Oral and Maxillofacial Surgery
7703 FLOYD CURL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: University Of Texas Health Science Center At San Antonio
  • 2,397 clinicians in this Medicare group
NPI 1750403887 (210) 567-3274
Bexar Physician Services, PLLC
0.7 mi
Internal Medicine
2827 BABCOCK RD
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 83 clinicians in this Medicare group
NPI 1730960998 (210) 705-6300
Community Medicine Associates
7.0 mi
Family Medicine
903 W MARTIN ST # MS 49-2
San Antonio, TX 78207
  • Reassigned Medicare billing, Texas enrollment
  • 1,129 clinicians in this Medicare group
NPI 1245313329 (210) 358-3401
South Texas Physician Services, PLLC
31 mi
Internal Medicine
600 N UNION AVE
New Braunfels, TX 78130
  • Reassigned Medicare billing, Texas enrollment
  • 101 clinicians in this Medicare group
NPI 1598546772 (830) 606-9111
Gulf Coast Physician Services, PLLC
139 mi
Internal Medicine
600 ELIZABETH ST
Corpus Christi, TX 78404
  • Reassigned Medicare billing, Texas enrollment
  • 154 clinicians in this Medicare group
NPI 1922889187 (361) 881-3000

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.

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.
88 services32 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.
37 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.
23 services23 patients

Hospital Affiliations CMS Care Compare 4

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

Christus Spohn Hospital Corpus Christi

Acute Care Hospitals · Corpus Christi, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450046
Location600 Elizabeth StreetCorpus Christi, TX 78404 · Nueces County
Emergency services Birthing friendly

University Health System

Acute Care Hospitals · San Antonio, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450213
Location4502 Medical DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Christus Santa Rosa Medical Center

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450237
Location2827 Babcock RoadSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Christus Santa Rosa Hospital-San Marcos

Acute Care Hospitals · San Marcos, TX
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number450272
Location1301 Wonder World DriveSan Marcos, TX 78666 · Hays County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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.

EDUARDO N. POLLONO MD
Internal Medicine (Cardiovascular Disease)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4000
DR. MAHDIEH IRAN NEJAD PARIZI M.D.
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-2015
RICHARD LEE BALLENTINE D.M.D.
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-2015
MR. STEVAN REYES PTA
Physical Therapy Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4253
MRS. CLAIRE LELEUX BEADLE CRNA
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4000
NNENNA AWAGU CRNA
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 567-4500
DR. CYNTHIA N NGUYEN PHARMD
Pharmacist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 743-4034
DR. JONATHAN EDWARD SLOVIK MD
Hospitalist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Bexar County (210) 358-4000

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 Calvin Plummer's NPI number?

The NPI number for Calvin Plummer is 1821749367. It was assigned to this individual provider in the NPPES registry on January 17, 2022.

Where is Calvin Plummer located?

Calvin Plummer practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-4000.

What is Calvin Plummer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Is Calvin Plummer enrolled in Medicare?

Yes. Calvin Plummer 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 Calvin Plummer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Calvin Plummer reassigns Medicare benefits to 5 organizations: Uthscsa Dental School (San Antonio, TX), Bexar Physician Services, PLLC (San Antonio, TX), Community Medicine Associates (San Antonio, TX), South Texas Physician Services, PLLC (New Braunfels, TX) and Gulf Coast Physician Services, PLLC (Corpus Christi, TX). 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 Calvin Plummer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Calvin Plummer accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 5 other insurers list Calvin Plummer 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 Calvin Plummer affiliated with any hospitals?

According to CMS data, Calvin Plummer is affiliated with Christus Spohn Hospital Corpus Christi, University Health System, Christus Santa Rosa Medical Center and Christus Santa Rosa Hospital-San Marcos.

When was this NPI record last updated?

The NPPES record for Calvin Plummer was last updated on January 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.