Cassandra Muff , FNP
Nurse Practitioner • Keller, TX
601 S Main St, Suite 200
Keller, TX 762487029
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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NPI assigned on September 14, 2006; this date does not establish years in practice.
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Published CMS data list 329 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 99213 — Established patient outpatient office visit: 143 service units.
- 99214 — Established patient outpatient office visit: 83 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 41 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 7 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 322 Medicare Part D prescriptions, including refills, in 2020.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Published rows only; this is not a quality measure.
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Published Part D records, 2020:
- Meloxicam — 28 prescription fills, including refills.
- Methylprednisolone — 23 prescription fills, including refills.
- Doxycycline Monohydrate — 23 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 20 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 195 in 2017 to 329 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
601 S Main St
Suite 200
Keller, TX 762487029
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 6 distinct additional practice-address records in Beaumont, TX; Corpus Christi, TX; Irving, TX and 3 more. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $17,842 in 2020
The total amount Medicare approved for these services in 2020. 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 – by Provider and Service, 2020.
Paid by Medicare
About $11,219 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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 – by Provider and Service, 2020.
30-day fills
429 standardized 30-day fills in 2020
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
$4,439 in 2020
The total cost of these prescriptions in 2020, 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 – by Provider and Drug, 2020.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $15.48 in 2023
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2023.
NPI first issued
2006
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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; Medicare.gov, “Does your provider accept Medicare as full payment?”
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.
Enrolled in Medicare (PECOS)
Cassandra Muff 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 Cassandra Muff 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 Keller and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Cassandra Muff are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Cassandra Muff are from 2020.
5 active clinicians are listed under Nurse Practitioner with a practice address in Keller, TX (4,835 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 69% from 195 in 2017 to 329 in 2020.
- 2017: 195
- 2018: 605
- 2019: 542
- 2020: 329
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Medicare-allowed amount
Medicare-allowed amount increased 58% from $11,317 in 2017 to $17,842 in 2020.
- 2017: $11,317
- 2018: $25,955
- 2019: $28,043
- 2020: $17,842
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Paid by Medicare
Paid by Medicare increased 53% from $7,320 in 2017 to $11,219 in 2020.
- 2017: $7,320
- 2018: $17,828
- 2019: $19,220
- 2020: $11,219
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 148% from 130 in 2016 to 322 in 2020.
- 2016: 130
- 2017: 204
- 2018: 415
- 2019: 462
- 2020: 322
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30-day fills
30-day fills increased 126% from 190 in 2016 to 429 in 2020.
- 2016: 190
- 2017: 226
- 2018: 443
- 2019: 499
- 2020: 429
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Part D drug cost
Part D drug cost increased 139% from $1,857 in 2016 to $4,439 in 2020.
- 2016: $1,857
- 2017: $2,070
- 2018: $5,348
- 2019: $5,286
- 2020: $4,439
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $12.63 in 2022 to $15.48 in 2023.
- 2022: $12.63
- 2023: $15.48
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2020), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $15.48.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $15.48 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2019 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 – by Provider and Service data, 2017–2020; 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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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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143 | 125 | $105.00 | $63.50 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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83 | 78 | $170.00 | $91.55 |
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36415
Insertion of needle into vein for collection of blood sample
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41 | 40 | $17.00 | $2.98 |
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81002
Urinalysis, manual test
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25 | 21 | $9.00 | $3.43 |
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81003
Automated urinalysis test
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13 | 12 | $20.00 | $2.25 |
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90662
Influenza vaccine split virus, preservative free
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12 | 12 | $63.85 | $60.47 |
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G0008
Administration of influenza virus vaccine
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12 | 12 | $31.03 | $16.71 |
Source: CMS Part B by Provider and Service, 2020; 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 2020.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Meloxicam | Meloxicam | 28 | 992 | $114.39 | 26 |
| Methylprednisolone | Methylprednisolone | 23 | 153 | $238.37 | 23 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 23 | 221 | $314.25 | 23 |
| Alprazolam | Alprazolam | 21 | 540 | $96.62 | 17 |
| Cefuroxime | Cefuroxime Axetil | 19 | 184 | $508.92 | 19 |
| Fluticasone Propionate | Fluticasone Propionate | 18 | 690 | $221.88 | 12 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 17 | 167 | $155.04 | 16 |
| Levofloxacin | Levofloxacin | 16 | 160 | $191.63 | 12 |
| Fluconazole | Fluconazole | 16 | 60 | $86.04 | 11 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 16 | 339 | $695.49 | 11 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 15 | 111 | $52.28 | 14 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 15 | 111 | $242.03 | 15 |
| Atorvastatin Calcium | Atorvastatin Calcium | 14 | 960 | $112.48 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 13 | 1,110 | $367.62 | — |
| Prednisone | Prednisone | 12 | 129 | $53.58 | 12 |
| Labetalol Hcl | Labetalol Hcl | 12 | 360 | $212.54 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 11 | 690 | $156.51 | — |
| Metformin Hcl | Metformin Hcl | 11 | 930 | $155.45 | — |
| Omeprazole | Omeprazole | 11 | 810 | $418.06 | — |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 11 | 89 | $46.16 | — |
Source: CMS Part D by Provider and Drug, 2020; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-09-08NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20091022000679
TX
6002709896
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
4046 Dowlen Rd Ste A
Beaumont, TX 777066849
Phone: 4092255924
1320 Wonder World Dr Ste 101
San Marcos, TX 786667558
Phone: 5123963911
11823 Culebra Rd Ste 105
San Antonio, TX 782534563
Phone: 2105981517
5638 Saratoga Blvd Ste 114
Corpus Christi, TX 784144134
Phone: 3614445280
1339 S Broadway St
Sulphur Springs, TX 754824895
Phone: 9039511000
919 Hidden Rdg Ste 1008
Irving, TX 750383813
Phone: 4692822701
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Family
Family Nurse Practitioner (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Nurse Practitioner (license number reported to NPPES: TX AP118253)
NPI status registered as active in NPPES database
Registered at 601 S MAIN ST, SUITE 200, KELLER, TX 762487029 (Tel: 8177536888)
Registered at 601 S MAIN ST, SUITE 200, KELLER, TX 762487029 (Tel: 8177536888)
Recorded as CASSANDRA MUFF, F. N. P.
Nurse Practitioner (license number reported to NPPES: TX 775004)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
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Mailing Address
601 S Main St, Suite 200
Keller, TX 762487029
Phone: 8177536888