Dr. Ann S. Mercer, MD
- Medicare services, 2024
- 2,513
- Medicare patients, 2024
- 453
- Part D claims, 2024
- 5,601
- Hospital affiliations
- 3
- Industry payments
- $6,823
- Practice address
- 2801 Missouri Ave Ste 12, Las Cruces, NM 88011-5061
- Practice phone
- Call (505) 522-6900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ann S Mercer, MD
Physician office · Las Cruces, New Mexico
Find Dr. Mercer'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. Ann S. Mercer is an internist in Las Cruces, New Mexico
Dr. Mercer practices at Ann S Mercer, MD in Las Cruces, New Mexico.
Dr. Mercer's NPI, 1811913502, was assigned on July 14, 2006. Dr. Mercer graduated from University of Puerto Rico School of Medicine in 1978. Dr. Mercer holds New Mexico license 84-79.
- NPI
- 1811913502NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193752277
- NPI enumeration date
- July 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (505) 522-6900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ann S. Mercer practices at Ann S Mercer, MD in Las Cruces, New Mexico
Dr. Mercer's primary practice is Ann S Mercer, MD, at 2801 Missouri Ave Ste 12, Las Cruces, NM 88011-5061. The practice phone is (505) 522-6900.
- Ann S Mercer, MD2801 Missouri Ave Ste 12, Las Cruces, NM 88011-5061Phone(505) 522-6900
Source: Dmand AI Affiliation Data
Dr. Ann S. Mercer is affiliated with 12 sites of care and 1 medical group
Dr. Mercer's primary practice is Ann S Mercer, MD in Las Cruces, New Mexico. Dr. Mercer is also affiliated with Memorial Medical Center. Dmand AI also links Dr. Mercer to 2 more hospitals, 5 home health agencies, 2 skilled nursing facilities, 1 group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ann S. Mercer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mercer practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ann S Mercer, MD | Available with a free account |
| +11 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ann S. Mercer is one of 734 internists in New Mexico
Internal medicine is Dr. Mercer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mercer is licensed in New Mexico.
Specialties and state licenses
- Internal medicine, New MexicoPrimary
Clinical focus
Dmand AI lists acid reflux, acute diabetes, acute kidney failure, acute sinusitis, acute skin infection, alcohol use disorders, aneurysm and ankle or foot injury among the conditions Dr. Mercer treats.
Internists near Dr. Mercer
Counts of internists 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. Ann S. Mercer billed Medicare for 2,513 services in 2024
CMS data shows 2,513 Medicare services from Dr. Mercer across 20 procedure codes in 2024, for 453 Medicare patients. Medicare paid $159,365 for them.
Dr. Mercer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8062024: 1,7682%
- Tests and treatments
- 2023: 3822024: 32615%
- Lab and pathology
- 2023: 4012024: 25836%
- Surgery
- 2023: 852024: 815%
- Other services
- 2023: 762024: 805%
Where Dr. Mercer's Medicare services took place, 2024
- In an office1,58663%
- In a facility92737%
Dr. Mercer compared with the New Mexico median for internists, 2024
- Dr. Mercer
- New Mexico median
- Medicare services
- 2,513vs 2818.9 times
- Medicare patients
- 453vs 1443.1 times
- Part D claims
- 4,945vs 16230.5 times
Medians across 716 internists in New Mexico with Dmand AI profiles that report each measure.
Dr. Mercer'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.
Need commercial claims for Dr. Mercer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mercer and other internists in New Mexico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ann S. Mercer treated 453 Medicare patients in 2024, average age 77
CMS counts 453 Medicare patients who saw Dr. Mercer in 2024. The largest group is 75 to 84, with 164 patients. 75% of them have high blood pressure, and 56% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mercer's median patient age at 70, with 61% women.
Dr. Mercer's Medicare patients by age, 2024
Dr. Mercer's Medicare patients by sex, 2024
- Women26057%
- Men19343%
Chronic conditions among Dr. Mercer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol56%
- Arthritis44%
- Diabetes35%
- Ischemic heart disease34%
- Anxiety30%
- Mood disorders30%
- Chronic kidney disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mercer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ann S. Mercer wrote 5,601 Medicare Part D claims in 2024
In 2024, Dr. Mercer wrote 5,601 Medicare Part D claims for 334 patients. 87% of them were for generic drugs. CMS names the drug for 4,945 of them, across 107 drugs with 11 or more claims each, at $259,917 in total drug cost. In 2023, CMS named 4,605 claims across 104 drugs.
Dr. Mercer's Part D claims by kind of drug, 2024
- Generic4,868 claims87%
- Brand-name698 claims12%
- Other35 claims1%
Dr. Mercer'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.
Drug classes CMS tracks in Dr. Mercer's Part D claims, 2024
- Opioids3%147 of 5,601 claims
- Antibiotics9%487 of 5,601 claims
- Antipsychotics, patients 65 and over1%40 of 5,601 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,6052024: 4,9457%
Drugs named by CMS: 107 in 2024, 104 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
Dr. Ann S. Mercer ranks in the 83rd percentile for removal of tissue in Medicare
Dr. Mercer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mercer as offering telehealth. CMS counts 82 procedures of removal of tissue by Dr. Mercer, more than 83% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Mercer ranks in Medicare procedure volume
- Removal of tissue
- 83rd percentile82 procedures
- Removal of nail tissue
- 60th percentile15 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ann S. Mercer received $6,823 in industry payments from 2016 to 2025
CMS Open Payments shows 343 general payments to Dr. Mercer from 35 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Gilead Sciences, Inc. paid the most, $1,716.
General payments to Dr. Mercer by program year, 2016 to 2025
General payments to Dr. Mercer by kind, 2016 to 2025
- Food and beverage$6,61297%
- Education$2103%
Companies that paid Dr. Mercer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ann S. Mercer graduated from University of Puerto Rico School of Medicine
Dr. Mercer graduated from University of Puerto Rico School of Medicine in 1978.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Ann S. Mercer accepts plans from 19 insurance carriers
Dr. Mercer is in network with 19 carriers, including Aetna, Elevance 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
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +11 more carriersWith a free account
Plan types Dr. Mercer accepts, by number of carriers
- HMO11
- PPO10
- Medicare9
- POS6
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Ann S. Mercer'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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. Ann S. Mercer
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. Ann S. Mercer's NPI number?
Dr. Ann S. Mercer's NPI number is 1811913502. It was assigned on July 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ann S. Mercer?
Dr. Ann S. Mercer is an internist in Las Cruces, New Mexico. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ann S. Mercer practice?
Dr. Mercer practices at 2801 Missouri Ave Ste 12, Las Cruces, NM 88011-5061. Dr. Mercer's primary practice is Ann S Mercer, MD in Las Cruces, New Mexico. Dmand AI also links Dr. Mercer to 2 hospitals, 5 home health agencies, 2 skilled nursing facilities, 1 group practice or clinic and 1 medical group.
What is Dr. Ann S. Mercer's office phone number?
The practice phone on file for Dr. Mercer is (505) 522-6900.
What is Dr. Ann S. Mercer's medical license number?
Dr. Mercer holds New Mexico license 84-79.
Which hospitals is Dr. Ann S. Mercer affiliated with?
Dr. Mercer is affiliated with Memorial Medical Center. Dmand AI links Dr. Mercer to 2 more hospitals.
Does Dr. Ann S. Mercer accept Medicare?
Yes. CMS data shows Dr. Mercer billed Medicare for 2,513 services in 2024, and Dr. Mercer accepts Medicare assignment.
Does Dr. Ann S. Mercer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mercer as offering telehealth services.
How many Medicare patients does Dr. Ann S. Mercer see?
CMS counts 453 Medicare patients who saw Dr. Mercer in 2024, with an average age of 77.
What services does Dr. Ann S. Mercer bill to Medicare?
In 2024, Dr. Mercer's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99233) and office visit, established patient (99213).
Show 5 more questionsShow fewer questions
Where did Dr. Ann S. Mercer go to medical school?
Dr. Mercer graduated from University of Puerto Rico School of Medicine in 1978.
What drugs does Dr. Ann S. Mercer prescribe most?
In 2024 Medicare Part D data, Dr. Mercer's most prescribed drugs by claims were Losartan Potassium, Levothyroxine Sodium and Lisinopril.
Has Dr. Ann S. Mercer received payments from drug or device companies?
CMS Open Payments shows $6,823 in general payments to Dr. Mercer from 35 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Ann S. Mercer been practicing?
Dr. Mercer graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Ann S. Mercer accept?
Dr. Mercer is in network with 19 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in New Mexico by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card