HOLLY DAY M.D.
NPI 1235516329
Hospitalist in San Antonio, TX

Q: What is Holly Day's NPI number?

The NPI number for Holly Day is 1235516329. It was assigned to this individual provider in the NPPES registry on April 28, 2015.

Q: What is Holly Day's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Holly Day was last updated on October 19, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 April 28, 2015PECOS EnrolledAccepts Medicare Assignment

4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000 Get Directions Write a Review

NPPES record last updated: October 19, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 19, 2018, Jul 10, 2018 (2 updates tracked since 2018).

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About Holly Day M.d. NPPES

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

HOLLY DAY M.D. (NPI 1235516329) is an individual hospitalist provider in San Antonio, Texas, licensed in Texas (R7702) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, is affiliated with University Health System, and is a graduate of University Of Texas Medical School At San Antonio (2015).

NPPES Registry Identity

NPI1235516329

Entity TypeIndividualFemale

Primary Taxonomy208M00000X

Provider Legal NameHOLLY DAYCredential: M.D.

Location Address4502 MEDICAL DRSan Antonio, TX 78229

Mailing Address4502 Medical DrSan Antonio, TX 78229-4402 · (512) 529-8610

Phone(210) 358-4000

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2015

Enumeration DateApril 28, 2015

Last NPPES UpdateOctober 19, 20182 updates tracked since enumeration

✔ NPI 1235516329 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in TX · R7702

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License R7702 (TX)

4502 MEDICAL DR, San Antonio, TX 78229

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Other Identifiers 2

Other388269802TX · Cshcn

Medicaid388269801TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Imperial Insurance Companies, Inc..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

Holly Day 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 ID7214226307

PECOS Enrollment IDI20180705000779

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 Holly Day reassigns Medicare billing to 2 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

Wellmed Networks, Inc.

0.6 mi

Cardiovascular Disease

7622 LOUIS PASTEUR, SUITE 100
San Antonio, TX 78229

Reassigned Medicare billing, Texas enrollment
233 clinicians in this Medicare group

NPI 1386948677 (210) 588-0122

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 4

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.

104 services28 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.

35 services16 patients

Aspiration of fluid from chest cavity using imaging guidance 32555

This procedure, known as a thoracentesis, involves removing fluid from the space between the lungs and chest wall, called the pleural space. It's performed under imaging guidance to ensure precision. It can help diagnose conditions or relieve symptoms like shortness of breath.

16 services13 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.

13 services13 patients

Hospital Affiliations CMS Care Compare

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

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

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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

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)