Maria J Mercier , NP
Nurse Practitioner โข Lone Tree, CO
9777 S Yosemite St Ste 110
Lone Tree, CO 801243115
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 May 4, 2006; this date does not establish years in practice.
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Published CMS data list 23 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 90961 โ Dialysis services, 2-3 physician visits per month (20 years or older): 23 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 108 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022. Published rows only; this is not a quality measure.
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Published Part D records, 2022:
- Sevelamer Carbonate โ 27 prescription fills, including refills.
- Amlodipine Besylate โ 19 prescription fills, including refills.
- Clonidine Hcl โ 16 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 461 in 2018 to 23 in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2018โ2022.
Practice Location & Contact Primary Location
9777 S Yosemite St Ste 110
Lone Tree, CO 801243115
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: Rocky Mountain Kidney Care Llc; Rocky Mountain Kidney Care Professional Service Corp. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1988
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $5,986 in 2022
The total amount Medicare approved for these services in 2022. 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, 2022.
Paid by Medicare
About $4,771 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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, 2022.
30-day fills
227 standardized 30-day fills in 2022
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
$9,190 in 2022
The total cost of these prescriptions in 2022, 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, 2022.
Open Payments general payments, program year 2025
All general payments: $237.67 across 9 records.
By nature of payment
- Food and Beverage: $237.67 across 9 records.
Reporting-company totals (3 largest of 7)
- Novo Nordisk Inc: $93.11 across 3 records.
- Ardelyx, Inc.: $30.23 across 1 record.
- Otsuka Pharmaceutical Development & Commercialization, Inc.: $28.69 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
38 years (graduated 1988)
CMS Doctors and Clinicians data list 1988 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.
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.
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; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Maria Mercier 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 Maria Mercier 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 Lone Tree and Colorado
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Maria Mercier are from 2022.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Maria Mercier are from 2022.
24 active clinicians are listed under Nurse Practitioner with a practice address in Lone Tree, CO (1,262 in Colorado).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lone Tree
29.2% of these 24 clinicians have the CMS telehealth indicator.
58.3% of these 24 clinicians are listed by CMS as accepting Medicare assignment.
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 decreased 95% from 461 in 2018 to 23 in 2022.
- 2018: 461
- 2019: 353
- 2020: 332
- 2021: 351
- 2022: 23
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Medicare-allowed amount
Medicare-allowed amount decreased 82% from $34,064 in 2018 to $5,986 in 2022.
- 2018: $34,064
- 2019: $20,388
- 2020: $16,438
- 2021: $41,249
- 2022: $5,986
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Paid by Medicare
Paid by Medicare decreased 82% from $27,010 in 2018 to $4,771 in 2022.
- 2018: $27,010
- 2019: $16,082
- 2020: $13,179
- 2021: $33,071
- 2022: $4,771
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 30% from 155 in 2018 to 108 in 2022.
- 2018: 155
- 2019: 136
- 2020: 152
- 2021: 239
- 2022: 108
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30-day fills
30-day fills decreased 13% from 260 in 2018 to 227 in 2022.
- 2018: 260
- 2019: 252
- 2020: 354
- 2021: 507
- 2022: 227
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Part D drug cost
Part D drug cost decreased 88% from $76,863 in 2018 to $9,190 in 2022.
- 2018: $76,863
- 2019: $21,195
- 2020: $17,704
- 2021: $42,021
- 2022: $9,190
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $60.55 in 2021 to $237.67 in 2025.
- 2021: $60.55
- 2025: $237.67
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2022), CMS Open Payments (2025), CMS Doctors and Clinicians, 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 $237.67.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Rivfloza | General | $34.11 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $30.23 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Rivfloza | General | $29.95 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Rivfloza | General | $29.05 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. |
Food and Beverage
In-kind items and services
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โ | General | $28.69 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $25.54 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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Kerendia | General | $21.57 |
| Apellis Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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โ | General | $19.55 |
| SCPHARMACEUTICALS INC. |
Food and Beverage
In-kind items and services
|
FUROSCIX | General | $18.98 |
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 2016โ2021 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, 2017โ2022; 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 |
|---|---|---|---|---|
|
90961
Dialysis services, 2-3 physician visits per month (20 years or older)
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23 | 20 | $906.00 | $260.25 |
Source: CMS Part B by Provider and Service, 2022; 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 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Sevelamer Carbonate | Sevelamer Carbonate | 27 | 1,194 | $5,747.25 | โ |
| Amlodipine Besylate | Amlodipine Besylate | 19 | 1,480 | $150.06 | โ |
| Clonidine Hcl | Clonidine Hcl | 16 | 1,230 | $183.30 | โ |
| Carvedilol | Carvedilol | 12 | 800 | $173.48 | โ |
| Metoprolol Succinate | Metoprolol Succinate | 12 | 540 | $537.03 | โ |
| Hydralazine Hcl | Hydralazine Hcl | 11 | 810 | $431.06 | โ |
| Calcium Acetate | Calcium Acetate | 11 | 750 | $1,968.15 | โ |
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-16NUCC 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.
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20260608002316
CA
0244243806
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
Rocky Mountain Kidney Care Llc
1760 Prairie Ave, Cheyenne, WY 820094833
Phone: 7206960852
Rocky Mountain Kidney Care Llc
9777 S Yosemite St, Lone Tree, CO 801243115
Phone: 7206960852
Rocky Mountain Kidney Care Llc
4345 Harrison Blvd, Ogden, UT 844033103
Phone: 7206960852
Rocky Mountain Kidney Care Professional Service Corp
4417 W Gore Blvd, Lawton, OK 735055978
Phone: 4695905955
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Internal Medicine - Nephrology
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 9777 S YOSEMITE ST STE 110, LONE TREE, CO 801243115 (Tel: 9073755200)
Registered at 9777 S YOSEMITE ST STE 110, LONE TREE, CO 801243115 (Tel: 9073755200)
Nurse Practitioner (license number reported to NPPES: WY 56244)
NPI status registered as active in NPPES database
Registered at 1914 LELARAY ST, COLORADO SPRINGS, CO 809092800 (Tel: 7196327641)
Registered at 1914 LELARAY ST, COLORADO SPRINGS, CO 809092800 (Tel: 7196327641)
Recorded as MARIA MERCIER, NP
Nurse Practitioner (license number reported to NPPES: CO 200612)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Lone Tree
- Dawn Newbry, FNP-C
- Christina Hanson, RN
- Catherine Mennick, NP
- Jennifer Berry, FNP-C
- Brandi Konecny, FNP-C
- Dr. Christina Weber, DNP, AGACNP-BC
Mailing Address
9777 S Yosemite St Ste 110
Lone Tree, CO 801243115
Phone: 9073755200