Dr. Margaret A. Merriam, DO
- Medicare services, 2016
- 284
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 91
- Hospital affiliations
- 1
- Industry payments
- $621
- Practice address
- 720 Hospital Drive, Andrews, TX 79714
- Practice phone
- Call (915) 523-6624
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Andrews Family Medicine Rural Health Clinic
Rural Health Clinic - Hospital-Owned · Andrews, Texas
Find Dr. Merriam's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Margaret A. Merriam is a general surgeon in Andrews, Texas
Dr. Merriam practices at Andrews Family Medicine Rural Health Clinic in Andrews, Texas.
Dr. Merriam's NPI, 1083867147, was assigned on November 2, 2008. Dr. Merriam graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 2009. Dr. Merriam holds New Jersey license 25MB09593600.
- NPI
- 1083867147NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123342078
- NPI enumeration date
- November 2, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (915) 523-6624
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Margaret A. Merriam practices at 2 locations in Andrews, Texas
Dr. Merriam's primary practice is Andrews Family Medicine Rural Health Clinic, at 720 Hospital Drive, Andrews, TX 79714. The practice phone is (915) 523-6624. Dr. Merriam also practices at Andrews Family Medicine, 700 Hospital Dr, Andrews, TX 79714.
- Andrews Family Medicine Rural Health ClinicPrimary720 Hospital Drive, Andrews, TX 79714Phone(915) 523-6624
- Andrews Family Medicine700 Hospital Dr, Andrews, TX 79714 · Andrews CountyPhone(432) 523-6624
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Margaret A. Merriam is affiliated with 2 sites of care and 1 medical group
Dr. Merriam's primary practice is Andrews Family Medicine Rural Health Clinic in Andrews, Texas. Dr. Merriam is also affiliated with Permian Regional Medical Center. The medical group on file is Permian Physician Services. Dr. Merriam's employer is on file too: a rural health clinic (rhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Margaret A. Merriam's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merriam practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Andrews Family Medicine Rural Health Clinic | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Margaret A. Merriam is one of 1,939 general surgeons in Texas
Surgery is Dr. Merriam's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Merriam is board certified in surgery by the AOA Board of Surgery. Dr. Merriam is licensed in New Jersey.
Specialties and state licenses
- Surgery, New JerseyPrimary
Clinical focus
Dmand AI lists abdominal hernia repair surgery, colonoscopy, gastrointestinal bleeding, mastectomy and upper GI endoscopy among the conditions Dr. Merriam treats.
General surgeons near Dr. Merriam
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Margaret A. Merriam billed Medicare for 284 services in 2016
CMS data shows 284 Medicare services from Dr. Merriam across 7 procedure codes in 2016, for 21 Medicare patients. Medicare paid $28,537 for them.
Dr. Merriam's Medicare services by type, 2016
- Office and hospital visits265
- Surgery19
Where Dr. Merriam's Medicare services took place, 2016
- In an office6222%
- In a facility22278%
Dr. Merriam compared with the Texas median for general surgeons, 2016
- Dr. Merriam
- Texas median
- Medicare services
- 284vs 1182.4 times
- Medicare patients
- 21vs 9778% below
- Part D claims
- 44vs 42Close to median
Medians across 1,674 general surgeons in Texas with Dmand AI profiles that report each measure.
Dr. Merriam's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Merriam?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Merriam and other general surgeons in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Margaret A. Merriam treated 21 Medicare patients in 2024, average age 73
CMS counts 21 Medicare patients who saw Dr. Merriam in 2024. 75% of them have high blood pressure, and 62% have high cholesterol. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Merriam's median patient age at 53, with 71% women.
Chronic conditions among Dr. Merriam's Medicare patients, 2024
- High blood pressure75%
- High cholesterol62%
- Arthritis57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merriam's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women71%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Margaret A. Merriam wrote 91 Medicare Part D claims in 2024
In 2024, Dr. Merriam wrote 91 Medicare Part D claims for 39 patients. 93% of them were for generic drugs. CMS names the drug for 44 of them, across 2 drugs with 11 or more claims each, at $380 in total drug cost. In 2023, CMS named 61 claims across 2 drugs.
Dr. Merriam's Part D claims by kind of drug, 2024
- Generic85 claims93%
- Brand-name and other6 claims7%
Dr. Merriam'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: 612024: 4428%
Drugs named by CMS: 2 in 2024, 2 in 2023.
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. Margaret A. Merriam takes part in Medicare
Dr. Merriam accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Margaret A. Merriam received $621 in industry payments from 2016 to 2022
CMS Open Payments shows 21 general payments to Dr. Merriam from 10 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Lifecell Corporation paid the most, $303.
General payments to Dr. Merriam by program year, 2016 to 2022
Companies that paid Dr. Merriam the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Margaret A. Merriam graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine
Dr. Merriam graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 2009. Dr. Merriam is a member of AOA.
- Medical school
- Board certified in surgery
- Board certified in 2010 - 2017
- Board certified in 2014 - 2016
- Board certified in 2014 - 2025
Source: Dmand AI Professional Profile Data
Dr. Margaret A. Merriam accepts plans from 17 insurance carriers
Dr. Merriam is in network with 17 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Alliant Health Plans
- Aspirus Health Plan
- SelectHealth
- +9 more carriersWith a free account
Plan types Dr. Merriam accepts, by number of carriers
- HMO11
- PPO9
- POS5
- EPO4
- Medicare4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Margaret A. Merriam's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Margaret A. Merriam
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. Margaret A. Merriam's NPI number?
Dr. Margaret A. Merriam's NPI number is 1083867147. It was assigned on November 2, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Margaret A. Merriam?
Dr. Margaret A. Merriam is a general surgeon in Andrews, Texas. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Margaret A. Merriam practice?
Dr. Merriam practices at 720 Hospital Drive, Andrews, TX 79714. Dr. Merriam also practices at 700 Hospital Dr, Andrews, TX 79714. Dr. Merriam's primary practice is Andrews Family Medicine Rural Health Clinic in Andrews, Texas.
What is Dr. Margaret A. Merriam's office phone number?
The practice phone on file for Dr. Merriam is (915) 523-6624.
What is Dr. Margaret A. Merriam's medical license number?
Dr. Merriam holds New Jersey license 25MB09593600.
Which hospitals is Dr. Margaret A. Merriam affiliated with?
Dr. Merriam is affiliated with Permian Regional Medical Center.
What medical group is Dr. Margaret A. Merriam part of?
Dr. Merriam is linked to Permian Physician Services.
Does Dr. Margaret A. Merriam accept Medicare?
Yes. CMS data shows Dr. Merriam billed Medicare for 284 services in 2016, and Dr. Merriam accepts Medicare assignment.
How many Medicare patients does Dr. Margaret A. Merriam see?
CMS counts 21 Medicare patients who saw Dr. Merriam in 2024, with an average age of 73.
Is Dr. Margaret A. Merriam board certified?
Yes. Dr. Merriam is board certified in surgery by the AOA Board of Surgery.
Show 6 more questionsShow fewer questions
What services does Dr. Margaret A. Merriam bill to Medicare?
In 2016, Dr. Merriam's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and office visit, established patient (99214).
Where did Dr. Margaret A. Merriam go to medical school?
Dr. Merriam graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 2009.
What drugs does Dr. Margaret A. Merriam prescribe most?
In 2024 Medicare Part D data, Dr. Merriam's most prescribed drugs by claims were Pantoprazole Sodium and Gavilyte-C.
Has Dr. Margaret A. Merriam received payments from drug or device companies?
CMS Open Payments shows $621 in general payments to Dr. Merriam from 10 companies from 2016 to 2022. The largest total came from Lifecell Corporation.
How long has Dr. Margaret A. Merriam been practicing?
Dr. Merriam graduated from medical school in 2009, 17 years ago.
What insurance does Dr. Margaret A. Merriam accept?
Dr. Merriam is in network with 17 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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