Dr. Anna Marshall, DO

  • Gastonia, NC
  • Nephrologist
NPI1639559180PAC ID6507172806
Medicare services, 2024
2,774
Medicare patients, 2024
281
Part D claims, 2024
1,326
Publications
1
Hospital affiliations
2
Practice address
2544 Court Dr, Gastonia, NC 28054
Practice phone
Call (704) 348-2992
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Metrolina Nephrology Associates, PA

Gastonia, North Carolina

See all 7 affiliations

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Dr. Anna Marshall is a nephrologist in Gastonia, North Carolina

Dr. Marshall practices at Metrolina Nephrology Associates, PA in Gastonia, North Carolina.

Dr. Marshall's NPI, 1639559180, was assigned on May 30, 2015. Dr. Marshall holds North Carolina license 2020-01084.

NPI and contact details
Medicare PAC ID
6507172806
NPI enumeration date
May 30, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(704) 348-2992
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Anna Marshall practices at Metrolina Nephrology Associates, PA in Gastonia, North Carolina

Dr. Marshall's primary practice is Metrolina Nephrology Associates, PA, at 2544 Court Dr, Gastonia, NC 28054 in Gaston County. The practice phone is (704) 348-2992.

  • Metrolina Nephrology Associates, PA
    2544 Court Dr, Gastonia, NC 28054 · Gaston CountyPhone(704) 348-2992

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Anna Marshall is affiliated with 6 sites of care and 1 medical group

Dr. Marshall's primary practice is Metrolina Nephrology Associates, PA in Gastonia, North Carolina. Dr. Marshall is also affiliated with CaroMont Regional Medical Center. The medical group on file is Metrolina Nephrology Associates. Dmand AI also links Dr. Marshall to 1 more hospital, 2 dialysis centers and 1 ambulatory surgery center, each named with a free account.

See all 7 affiliations for Dr. Marshall

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Anna Marshall's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marshall practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Metrolina Nephrology Associates, PAAvailable with a free account
+5 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Anna Marshall is one of 348 nephrologists in North Carolina

Nephrology is Dr. Marshall's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dmand AI has Dr. Marshall's licenses on file in 3 states: North Carolina, Florida and South Carolina.

Specialties and state licenses

  • Nephrology, North CarolinaPrimaryLicense 2020-01084 · taxonomy 207RN0300X
  • Internal medicine, FloridaLicense UO4362 · taxonomy 207R00000X
  • South Carolina licenseLicense LL52009

Nephrologists near Dr. Marshall

Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.

348nephrologists in North Carolina
6nephrologists in Gastonia

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Anna Marshall billed Medicare for 2,774 services in 2024

CMS data shows 2,774 Medicare services from Dr. Marshall across 28 procedure codes in 2024, for 281 Medicare patients. Medicare paid $129,592 for them.

Medicare services, 20242,774
Medicare patients281
Paid by Medicare$129,592
Procedure codes28

Dr. Marshall's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Lab and pathology
2023: 1,9572024: 1,23937%
Office and hospital visits
2023: 7072024: 6981%
Tests and treatments
2023: 5182024: 42618%
Surgery
2023: 4322024: 28634%
Other services
2023: 02024: 125
Drugs given in the office
2023: 6,0302024: 0100%

Where Dr. Marshall's Medicare services took place, 2024

  • In an office2,45288%
  • In a facility32212%

Dr. Marshall compared with the North Carolina median for nephrologists, 2024

  • Dr. Marshall
  • North Carolina median
Medicare services
2,774vs 1,0462.7 times
Medicare patients
281vs 2975% below
Part D claims
1,175vs 73261% above

Medians across 346 nephrologists in North Carolina with Dmand AI profiles that report each measure.

Dr. Marshall's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Marshall

Need commercial claims for Dr. Marshall?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marshall and other nephrologists in North Carolina.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Anna Marshall treated 281 Medicare patients in 2024, average age 70

CMS counts 281 Medicare patients who saw Dr. Marshall in 2024. The largest group is 65 to 74, with 101 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 26% are also on Medicaid. Their average risk score is 4.39, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Marshall's median patient age at 71, with 54% women.

Medicare patients, 2024281
Average age70
Average risk score4.39
Also on Medicaid26%

Dr. Marshall's Medicare patients by age, 2024

Dr. Marshall's Medicare patients by sex, 2024

  • Women14451%
  • Men13749%

Chronic conditions among Dr. Marshall's Medicare patients, 2024

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes58%
  5. Arthritis51%
  6. Heart failure47%
  7. Ischemic heart disease43%
  8. Anxiety39%

Share of Medicare patients with each condition. A patient can have several.

Dr. Marshall's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 71

Patient panel by sex, all payers

  • Women54%
  • Men45%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Anna Marshall wrote 1,326 Medicare Part D claims in 2024

In 2024, Dr. Marshall wrote 1,326 Medicare Part D claims for 250 patients. 90% of them were for generic drugs. CMS names the drug for 1,175 of them, across 24 drugs with 11 or more claims each, at $223,106 in total drug cost. In 2023, CMS named 1,295 claims across 25 drugs.

Part D claims, 20241,326
Drugs named by CMS24
Total drug cost$223,106
Part D patients250

Dr. Marshall's Part D claims by kind of drug, 2024

  • Generic1,189 claims90%
  • Brand-name137 claims10%

Dr. Marshall's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,2952024: 1,1759%

Drugs named by CMS: 24 in 2024, 25 in 2023.

See all prescribing by Dr. Marshall

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Anna Marshall takes part in Medicare

Dr. Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Anna Marshall has 1 publication on record

Dmand AI links 1 paper to Dr. Marshall in 2012.

Papers1

Recent publications by Dr. Marshall

See all 1 publications and co-authors

See who Dr. Marshall researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marshall works with, so you can find a warm path to the right nephrologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Anna Marshall received $2,634 in industry payments from 2016 to 2022

CMS Open Payments shows 29 general payments to Dr. Marshall from 13 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 89% of the total. AstraZeneca Pharmaceuticals LP paid the most, $641.

General payments to Dr. Marshall by program year, 2016 to 2022

General payments to Dr. Marshall by kind, 2016 to 2022

$2.6Kin total
  • Food and beverage$2,34089%
  • Education$29411%

Companies that paid Dr. Marshall the most, 2016 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Marshall

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Anna Marshall's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Anna Marshall

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Anna Marshall's NPI number?

Dr. Anna Marshall's NPI number is 1639559180. It was assigned on May 30, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Anna Marshall?

Dr. Anna Marshall is a nephrologist in Gastonia, North Carolina. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).

Where does Dr. Anna Marshall practice?

Dr. Marshall practices at 2544 Court Dr, Gastonia, NC 28054. Dr. Marshall's primary practice is Metrolina Nephrology Associates, PA in Gastonia, North Carolina. Dmand AI also links Dr. Marshall to 1 hospital, 2 dialysis centers and 1 ambulatory surgery center.

What is Dr. Anna Marshall's office phone number?

The practice phone on file for Dr. Marshall is (704) 348-2992.

What is Dr. Anna Marshall's medical license number?

Dr. Marshall holds North Carolina license 2020-01084, one of the licenses on file in 3 states.

Which states has Dr. Anna Marshall been licensed in?

Dmand AI has state licenses on file for Dr. Marshall in North Carolina, Florida and South Carolina.

Which hospitals is Dr. Anna Marshall affiliated with?

Dr. Marshall is affiliated with CaroMont Regional Medical Center. Dmand AI links Dr. Marshall to 1 more hospital.

What medical group is Dr. Anna Marshall part of?

Dr. Marshall is linked to Metrolina Nephrology Associates.

Does Dr. Anna Marshall accept Medicare?

Yes. CMS data shows Dr. Marshall billed Medicare for 2,774 services in 2024, and Dr. Marshall accepts Medicare assignment.

How many Medicare patients does Dr. Anna Marshall see?

CMS counts 281 Medicare patients who saw Dr. Marshall in 2024, with an average age of 70.

Show 5 more questionsShow fewer questions

What services does Dr. Anna Marshall bill to Medicare?

In 2024, Dr. Marshall's most billed Medicare services were surgery: heart and blood vessels (36415), lab and pathology test (80069) and lab and pathology test (83970).

What drugs does Dr. Anna Marshall prescribe most?

In 2024 Medicare Part D data, Dr. Marshall's most prescribed drugs by claims were Nifedipine ER, Amlodipine Besylate and Losartan Potassium.

Has Dr. Anna Marshall received payments from drug or device companies?

CMS Open Payments shows $2,634 in general payments to Dr. Marshall from 13 companies from 2016 to 2022. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Anna Marshall been practicing?

Dr. Marshall graduated from medical school in 2015, 11 years ago.

Does Dr. Anna Marshall do research?

Dmand AI links 1 publication to Dr. Marshall.

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