Dr. Maria Elena Johnson, MD
- Medicare services, 2024
- 234
- Medicare patients, 2024
- 185
- Part D claims, 2024
- 1,434
- Publications
- 1
- MIPS score, 2024
- 92
- Practice address
- 863 North Main Street Extension, Suite 300, Wallingford, CT 06492
- Practice phone
- Call (860) 246-2571
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wallingford Endoscopy Center
Surgery Center - Medicare-Certified · Wallingford, Connecticut
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Maria Elena Johnson is a gastroenterologist in Wallingford, Connecticut
Dr. Johnson practices at Wallingford Endoscopy Center in Wallingford, Connecticut.
Dr. Johnson's NPI, 1033300728, was assigned on August 7, 2007. Dr. Johnson holds Connecticut license 048571.
- NPI
- 1033300728NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709040991
- NPI enumeration date
- August 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (860) 246-2571
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maria Elena Johnson practices at Wallingford Endoscopy Center in Wallingford, Connecticut
Dr. Johnson's primary practice is Wallingford Endoscopy Center, at 863 North Main Street Extension, Suite 300, Wallingford, CT 06492. The practice phone is (860) 246-2571.
- Wallingford Endoscopy Center863 North Main Street Extension, Suite 300, Wallingford, CT 06492Phone(860) 246-2571
Source: Dmand AI Affiliation Data
Dr. Maria Elena Johnson is affiliated with 5 sites of care and 2 medical groups
Dr. Johnson's primary practice is Wallingford Endoscopy Center in Wallingford, Connecticut. Dr. Johnson is also affiliated with The Hospital of Central Connecticut. The medical group on file is Connecticut GI. Dmand AI also links Dr. Johnson to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maria Elena Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wallingford Endoscopy Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria Elena Johnson is one of 298 gastroenterologists in Connecticut
Gastroenterology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Johnson is licensed in Connecticut.
Specialties and state licenses
- Gastroenterology, ConnecticutPrimary
Gastroenterologists near Dr. Johnson
Counts of gastroenterologists 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. Maria Elena Johnson billed Medicare for 234 services in 2024
CMS data shows 234 Medicare services from Dr. Johnson across 8 procedure codes in 2024, for 185 Medicare patients. Medicare paid $25,190 for them.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1192024: 1244%
- Office and hospital visits
- 2023: 1192024: 1108%
- Drugs given in the office
- 2023: 232024: 0100%
Where Dr. Johnson's Medicare services took place, 2024
- In an office7632%
- In a facility15868%
Dr. Johnson compared with the Connecticut median for gastroenterologists, 2024
- Dr. Johnson
- Connecticut median
- Medicare services
- 234vs 36135% below
- Medicare patients
- 185vs 25327% below
- Part D claims
- 1,310vs 5382.4 times
Medians across 284 gastroenterologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Johnson'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnson and other gastroenterologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maria Elena Johnson treated 185 Medicare patients in 2024, average age 73
CMS counts 185 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 84 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 20% are also on Medicaid. Their average risk score is 1.64, 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. Johnson's median patient age at 60, with 80% women.
Dr. Johnson's Medicare patients by age, 2024
Dr. Johnson's Medicare patients by sex, 2024
- Women13674%
- Men4926%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis52%
- Anxiety39%
- Mood disorders32%
- Depression30%
- Ischemic heart disease29%
- Diabetes28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women80%
- Men18%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maria Elena Johnson wrote 1,434 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 1,434 Medicare Part D claims for 446 patients. 79% of them were for generic drugs. CMS names the drug for 1,310 of them, across 22 drugs with 11 or more claims each, at $340,902 in total drug cost. In 2023, CMS named 1,033 claims across 18 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic1,129 claims79%
- Brand-name305 claims21%
Dr. Johnson'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. Johnson's Part D claims, 2024
- Antibiotics2%35 of 1,434 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: 1,0332024: 1,31027%
Drugs named by CMS: 22 in 2024, 18 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. Maria Elena Johnson scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Johnson for performance year 2024, reported as part of a group. Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johnson as offering telehealth. CMS counts 91 procedures of colonoscopy by Dr. Johnson, more than 78% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Johnson's MIPS scores, performance year 2024
- 92of 100Final score
- 89.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Johnson ranks in Medicare procedure volume
- Colonoscopy
- 78th percentile91 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 65th percentile54 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Maria Elena Johnson has 1 publication on record
Dmand AI links 1 paper to Dr. Johnson in 2011.
Recent publications by Dr. Johnson
See who Dr. Johnson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Johnson works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Maria Elena Johnson received $5,812 in industry payments from 2016 to 2025
CMS Open Payments shows 295 general payments to Dr. Johnson from 35 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $1,669.
General payments to Dr. Johnson by program year, 2016 to 2025
General payments to Dr. Johnson by kind, 2016 to 2025
- Food and beverage$5,78199%
- Education$311%
Companies that paid Dr. Johnson the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Maria Elena Johnson'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Maria Elena Johnson
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. Maria Elena Johnson's NPI number?
Dr. Maria Elena Johnson's NPI number is 1033300728. It was assigned on August 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria Elena Johnson?
Dr. Maria Elena Johnson is a gastroenterologist in Wallingford, Connecticut. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Maria Elena Johnson practice?
Dr. Johnson practices at 863 North Main Street Extension, Suite 300, Wallingford, CT 06492. Dr. Johnson's primary practice is Wallingford Endoscopy Center in Wallingford, Connecticut. Dmand AI also links Dr. Johnson to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Maria Elena Johnson's office phone number?
The practice phone on file for Dr. Johnson is (860) 246-2571.
What is Dr. Maria Elena Johnson's medical license number?
Dr. Johnson holds Connecticut license 048571.
Which hospitals is Dr. Maria Elena Johnson affiliated with?
Dr. Johnson is affiliated with The Hospital of Central Connecticut. Dmand AI links Dr. Johnson to 1 more hospital.
What medical group is Dr. Maria Elena Johnson part of?
Dr. Johnson is linked to Connecticut GI. Dmand AI links Dr. Johnson to 1 more medical group.
Does Dr. Maria Elena Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 234 services in 2024, and Dr. Johnson accepts Medicare assignment.
Does Dr. Maria Elena Johnson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johnson as offering telehealth services.
What is Dr. Maria Elena Johnson's MIPS score?
Dr. Johnson's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Maria Elena Johnson see?
CMS counts 185 Medicare patients who saw Dr. Johnson in 2024, with an average age of 73.
What services does Dr. Maria Elena Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (43239) and surgery: digestive system (45380).
What drugs does Dr. Maria Elena Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Famotidine, Omeprazole and Sod Sulf-Potass Sulf-Mag Sulf.
Has Dr. Maria Elena Johnson received payments from drug or device companies?
CMS Open Payments shows $5,812 in general payments to Dr. Johnson from 35 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Maria Elena Johnson been practicing?
Dr. Johnson graduated from medical school in 2005, 21 years ago.
Does Dr. Maria Elena Johnson do research?
Dmand AI links 1 publication to Dr. Johnson.
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