Erin Hammer , AGPCNP-C
Nurse Practitioner - Primary Care โข Pasadena, TX
4000 Spencer Hwy
Pasadena, TX 775041202
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Erin Hammer is listed in NPPES under Nurse Practitioner - Primary Care.
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NPI assigned on March 20, 2017; this date does not establish years in practice.
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Published CMS data list 287 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 153 service units.
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 85 service units.
- 99223 โ Initial hospital care with moderate level of medical decision making: 25 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 38 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium โ 16 prescription fills, including refills.
- Carvedilol โ 11 prescription fills, including refills.
- Pantoprazole Sodium โ 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner - Primary Care in Texas (2024, 198 clinicians with data). Median for this group: 305. Middle half: 83 to 706.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 211 in 2019 to 287 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019โ2024.
Practice Location & Contact Primary Location
4000 Spencer Hwy
Pasadena, TX 775041202
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Aslam Loya Md Pa; Hospital Medicine Services Of Tx, Pllc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2016
What Public CMS Data Show
Nurse Practitioner - Primary Care: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
97 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $24,546 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $19,381 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
48 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$359 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $115.57 across 4 records.
By nature of payment
- Food and Beverage: $115.57 across 4 records.
Reporting-company totals
- Movair Inc: $47.30 across 1 record.
- ZOLL Services LLC (A/K/A ZOLL LifeCor Corp): $43.47 across 2 records.
- Abbott Laboratories: $24.80 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
10 years (graduated 2016)
CMS Doctors and Clinicians data list 2016 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2017
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Erin Hammer has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Erin Hammer as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Pasadena and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Nurse Practitioner - Primary Care in Texas (2024, 198 clinicians with data). Median for this group: 305. Middle half: 83 to 706.
Too few clinicians listed under Nurse Practitioner - Primary Care in Pasadena have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner - Primary Care in Texas (2024, 198 clinicians with data). Median for this group: $21,259. Middle half: $7,086 to $49,977.
Too few clinicians listed under Nurse Practitioner - Primary Care in Pasadena have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner - Primary Care in Texas (2024, 198 clinicians with data). Median for this group: $15,621. Middle half: $5,094 to $36,763.
Too few clinicians listed under Nurse Practitioner - Primary Care in Pasadena have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 85% of clinicians listed under Nurse Practitioner - Primary Care in Texas (2024, 299 clinicians with data). Median for this group: 552. Middle half: 142 to 1,484.
Too few clinicians listed under Nurse Practitioner - Primary Care in Pasadena have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under Nurse Practitioner - Primary Care in Texas (2024, 299 clinicians with data). Median for this group: $40,304. Middle half: $2,549 to $139,469.
Too few clinicians listed under Nurse Practitioner - Primary Care in Pasadena have Medicare Part D data for 2024 to compare.
1 active clinicians are listed under Nurse Practitioner - Primary Care with a practice address in Pasadena, TX (844 in Texas).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 36% from 211 in 2019 to 287 in 2024.
- 2019: 211
- 2020: 293
- 2021: 312
- 2022: 289
- 2024: 287
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Medicare-allowed amount
Medicare-allowed amount increased 50% from $16,328 in 2019 to $24,546 in 2024.
- 2019: $16,328
- 2020: $23,654
- 2021: $27,910
- 2022: $27,055
- 2024: $24,546
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Paid by Medicare
Paid by Medicare increased 52% from $12,787 in 2019 to $19,381 in 2024.
- 2019: $12,787
- 2020: $18,730
- 2021: $22,364
- 2022: $21,638
- 2024: $19,381
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 87% from 288 in 2019 to 38 in 2024.
- 2019: 288
- 2020: 250
- 2021: 69
- 2022: 69
- 2024: 38
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30-day fills
30-day fills decreased 84% from 294 in 2019 to 48 in 2024.
- 2019: 294
- 2020: 253
- 2021: 82
- 2022: 89
- 2024: 48
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Part D drug cost
Part D drug cost decreased 95% from $7,794 in 2019 to $359 in 2024.
- 2019: $7,794
- 2020: $11,366
- 2021: $1,192
- 2022: $1,144
- 2024: $359
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $52.41 in 2021 to $115.57 in 2025.
- 2021: $52.41
- 2022: $83.96
- 2023: $54.49
- 2024: $76.58
- 2025: $115.57
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $115.57.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Movair Inc |
Food and Beverage
Cash or cash equivalent
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LUISA | General | $47.30 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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EMBOSHIELD NAV6 | General | $24.80 |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) |
Food and Beverage
Cash or cash equivalent
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LifeVest | General | $23.38 |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) |
Food and Beverage
Cash or cash equivalent
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LifeVest | General | $20.09 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2019โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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153 | 52 | $398.00 | $65.43 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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85 | 45 | $572.00 | $100.26 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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25 | 25 | $1107.00 | $147.49 |
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99239
Hospital discharge day management, more than 30 minutes
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24 | 23 | $592.00 | $96.90 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 16 | 780 | $200.09 | โ |
| Carvedilol | Carvedilol | 11 | 330 | $43.11 | โ |
| Pantoprazole Sodium | Pantoprazole Sodium | 11 | 302 | $115.79 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-03-17NUCC Taxonomy Code: 363LP2300X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20190222001932
TX
1759620529
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Hospital Medicine Services Of Tx, Pllc
12141 Richmond Ave, Houston, TX 770822408
Phone: 2815583444
Hospital Medicine Services Of Tx, Pllc
4000 Spencer Hwy, Pasadena, TX 775041202
Phone: 7133592000
Hospital Medicine Services Of Tx, Pllc
7700 Floyd Curl Dr, San Antonio, TX 782293902
Phone: 2105754000
Aslam Loya Md Pa
11920 Astoria Blvd, Houston, TX 770896155
Phone: 2814648484
Aslam Loya Md Pa
150 E Medical Ctr Blvd, Webster, TX 775984373
Phone: 2814648484
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Hospitalist
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Physician Assistant
Physician Assistant (Certified), Occupational Therapist
Emergency Medicine
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 4000 SPENCER HWY, PASADENA, TX 775041202 (Tel: 8322862818)
Registered at 4000 SPENCER HWY, PASADENA, TX 775041202 (Tel: 7133592000)
Recorded as ERIN HAMMER, AGPCNP-C
Registered at 11821 EAST FWY STE 175, HOUSTON, TX 770291960 (Tel: 7133300766)
Registered at 11821 EAST FWY STE 175, HOUSTON, TX 770291960 (Tel: 7133300766)
NPI status registered as active in NPPES database
Registered at 723 N OAK DR, HOUSTON, TX 770735300 (Tel: 8322862818)
Registered at 723 N OAK DR, HOUSTON, TX 770735300 (Tel: 8322862818)
Recorded as ERIN AMBROSE, AGPCNP-C
Nurse Practitioner (license number reported to NPPES: TX AP133395)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
4000 Spencer Hwy
Pasadena, TX 775041202
Phone: 7133592000