Dr. Mary E. Welch, DO
- Medicare services, 2024
- 344
- Medicare patients, 2024
- 233
- Part D claims, 2024
- 104
- MIPS score, 2024
- 97
- Hospital affiliations
- 3
- Practice address
- 1400 E Church St, Santa Maria, CA 93454
- Practice phone
- Call (805) 739-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Welch'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. Mary E. Welch is an emergency medicine physician in Santa Maria, California
Dr. Welch practices at Dignity Health - Marian Regional Medical Center in Santa Maria, California, part of CommonSpirit Health.
Dr. Welch's NPI, 1861776817, was assigned on October 7, 2011. Dr. Welch graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Welch holds California license 20A11996.
- NPI
- 1861776817NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507022985
- NPI enumeration date
- October 7, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 739-3100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary E. Welch practices at Dignity Health - Marian Regional Medical Center in Santa Maria, California
Dr. Welch's primary practice is Dignity Health - Marian Regional Medical Center, at 1400 E Church St, Santa Maria, CA 93454 in Santa Barbara County. The practice phone is (805) 739-3100.
- Dignity Health - Marian Regional Medical Center1400 E Church St, Santa Maria, CA 93454 · Santa Barbara CountyPhone(805) 739-3100
Source: Dmand AI Affiliation Data
Dr. Mary E. Welch is affiliated with 3 sites of care and 1 medical group
Dr. Welch's primary practice is Dignity Health - Marian Regional Medical Center in Santa Maria, California, part of CommonSpirit Health. Dr. Welch is also affiliated with Arrowhead Regional Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Welch to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary E. Welch's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Welch practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Marian Regional Medical Center | Available with a free account |
| +2 more affiliated sites | 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 CommonSpirit Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mary E. Welch is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Welch's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Welch is board certified in emergency medicine by the AOA Board of Emergency Medicine. Dr. Welch is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Welch
Counts of emergency medicine physicians 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. Mary E. Welch billed Medicare for 344 services in 2024
CMS data shows 344 Medicare services from Dr. Welch across 4 procedure codes in 2024, for 233 Medicare patients. Medicare paid $33,119 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Welch's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2702024: 23911%
- Tests and treatments
- 2023: 1122024: 1056%
Dr. Welch compared with the California median for emergency medicine physicians, 2024
- Dr. Welch
- California median
- Medicare services
- 344vs 26530% above
- Medicare patients
- 233vs 243Close to median
- Part D claims
- 13vs 6279% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Welch'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. Welch?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Welch and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary E. Welch treated 233 Medicare patients in 2024, average age 73
CMS counts 233 Medicare patients who saw Dr. Welch in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.04, 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. Welch's median patient age at 39, with 55% women.
Dr. Welch's Medicare patients by age, 2024
Dr. Welch's Medicare patients by sex, 2024
- Women13658%
- Men9742%
Chronic conditions among Dr. Welch's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Diabetes48%
- Mood disorders39%
- Anxiety38%
- Chronic kidney disease38%
- Depression35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Welch's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary E. Welch wrote 104 Medicare Part D claims in 2024
In 2024, Dr. Welch wrote 104 Medicare Part D claims for 68 patients. 97% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $20 in total drug cost. In 2023, CMS named 14 claims across 1 drug.
Dr. Welch's Part D claims by kind of drug, 2024
- Generic101 claims97%
- Brand-name and other3 claims3%
Dr. Welch'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. Welch's Part D claims, 2024
- Antibiotics38%40 of 104 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: 142024: 137%
Drugs named by CMS: 1 in 2024, 1 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. Mary E. Welch scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Welch for performance year 2024, reported as part of a group. Dr. Welch accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Welch's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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. Mary E. Welch received $31 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Welch from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $31.
Companies that paid Dr. Welch the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary E. Welch graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Welch graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Welch is a member of AOA.
- Medical school
- Board certified in emergency medicine
- Board certified in 2011 - 2026
Source: Dmand AI Professional Profile Data
Dr. Mary E. Welch accepts plans from 2 insurance carriers
Dr. Welch is in network with 2 carriers, including Excellus BlueCross BlueShield and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- CMS Medicare
Plan types Dr. Welch accepts, by number of carriers
- Medicare2
- EPO1
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary E. Welch'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) |
| 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. Mary E. Welch
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. Mary E. Welch's NPI number?
Dr. Mary E. Welch's NPI number is 1861776817. It was assigned on October 7, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary E. Welch?
Dr. Mary E. Welch is an emergency medicine physician in Santa Maria, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mary E. Welch practice?
Dr. Welch practices at 1400 E Church St, Santa Maria, CA 93454. Dr. Welch's primary practice is Dignity Health - Marian Regional Medical Center in Santa Maria, California, part of CommonSpirit Health. Dmand AI also links Dr. Welch to 1 hospital.
What is Dr. Mary E. Welch's office phone number?
The practice phone on file for Dr. Welch is (805) 739-3100.
What is Dr. Mary E. Welch's medical license number?
Dr. Welch holds California license 20A11996.
Which hospitals is Dr. Mary E. Welch affiliated with?
Dr. Welch practices at Dignity Health - Marian Regional Medical Center in Santa Maria, California. Dr. Welch is also affiliated with Arrowhead Regional Medical Center. Dmand AI links Dr. Welch to 1 more hospital.
What medical group is Dr. Mary E. Welch part of?
Dr. Welch is linked to Vituity.
Does Dr. Mary E. Welch accept Medicare?
Yes. CMS data shows Dr. Welch billed Medicare for 344 services in 2024, and Dr. Welch accepts Medicare assignment.
What is Dr. Mary E. Welch's MIPS score?
Dr. Welch's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mary E. Welch see?
CMS counts 233 Medicare patients who saw Dr. Welch in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
Is Dr. Mary E. Welch board certified?
Yes. Dr. Welch is board certified in emergency medicine by the AOA Board of Emergency Medicine.
What services does Dr. Mary E. Welch bill to Medicare?
In 2024, Dr. Welch's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Dr. Mary E. Welch go to medical school?
Dr. Welch graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010.
What drugs does Dr. Mary E. Welch prescribe most?
In 2024 Medicare Part D data, Dr. Welch's most prescribed drugs by claims were Prednisone.
Has Dr. Mary E. Welch received payments from drug or device companies?
CMS Open Payments shows $31 in general payments to Dr. Welch from 1 company from 2025 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Mary E. Welch been practicing?
Dr. Welch graduated from medical school in 2010, 16 years ago.
What insurance does Dr. Mary E. Welch accept?
Dr. Welch is in network with 2 carriers, including Excellus BlueCross BlueShield and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to emergency medicine practices?
See emergency medicine physicians in California 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