Dr. Ursula Gierlachowski, MD
- Medicare services, 2020
- 202
- Part D claims, 2021
- 11
- Hospital affiliations
- 1
- Industry payments
- $388
- State license
- 1
- Practice address
- 1800 N California St, Stockton, CA 95204
- Practice phone
- Call (209) 943-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Gierlachowski'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. Ursula Gierlachowski is an internist in Stockton, California
Dr. Gierlachowski practices at Dignity Health - St. Joseph's Medical Center in Stockton, California, part of CommonSpirit Health.
Dr. Gierlachowski's NPI, 1679629976, was assigned on January 27, 2007.
- NPI
- 1679629976NPI Registry (opens in a new tab)
- NPI enumeration date
- January 27, 2007
- NPI status
- Active
- Practice phone
- (209) 943-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ursula Gierlachowski practices at Dignity Health - St. Joseph's Medical Center in Stockton, California
Dr. Gierlachowski's primary practice is Dignity Health - St. Joseph's Medical Center, at 1800 N California St, Stockton, CA 95204 in San Joaquin County. The practice phone is (209) 943-2000.
- Dignity Health - St. Joseph's Medical Center1800 N California St, Stockton, CA 95204 · San Joaquin CountyPhone(209) 943-2000
Source: Dmand AI Affiliation Data
Dr. Ursula Gierlachowski is affiliated with 2 sites of care
Dr. Gierlachowski's primary practice is Dignity Health - St. Joseph's Medical Center in Stockton, California, part of CommonSpirit Health. Dmand AI also links Dr. Gierlachowski to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ursula Gierlachowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gierlachowski practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - St. Joseph's Medical Center | 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. Ursula Gierlachowski is one of 16,751 internists in California
Internal medicine is Dr. Gierlachowski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gierlachowski has a license on file in Illinois.
Specialties and state licenses
- Internal medicine, Illinois
Internists near Dr. Gierlachowski
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. Ursula Gierlachowski billed Medicare for 202 services in 2020
CMS data shows 202 Medicare services from Dr. Gierlachowski across 3 procedure codes in 2020. Medicare paid $8,149 for them. Every service was in an office.
Dr. Gierlachowski's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 6202020: 14776%
- Surgery
- 2019: 2902020: 5581%
- Lab and pathology
- 2019: 182020: 0100%
- Tests and treatments
- 2019: 422020: 0100%
- Other services
- 2019: 322020: 0100%
Dr. Gierlachowski compared with the California median for internists, 2020
- Dr. Gierlachowski
- California median
- Medicare services
- 202vs 36144% below
- Part D claims
- 11vs 42197% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Gierlachowski's most billed Medicare procedure codes, 2020
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. Gierlachowski?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gierlachowski and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ursula Gierlachowski's patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Dr. Gierlachowski's median patient age at 77, with 60% women.
Dr. Gierlachowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women60%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Ursula Gierlachowski wrote 11 Medicare Part D claims in 2021
In 2021, Dr. Gierlachowski wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $53 in total drug cost. In 2020, CMS named 545 claims across 25 drugs.
Dr. Gierlachowski's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 5452021: 1198%
Drugs named by CMS: 1 in 2021, 25 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ursula Gierlachowski received $388 in industry payments from 2016 to 2020
CMS Open Payments shows 25 general payments to Dr. Gierlachowski from 7 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 92% of the total. AstraZeneca Pharmaceuticals LP paid the most, $126.
General payments to Dr. Gierlachowski by program year, 2016 to 2020
General payments to Dr. Gierlachowski by kind, 2016 to 2020
- Food and beverage$35892%
- Education$318%
Companies that paid Dr. Gierlachowski the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ursula Gierlachowski'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| 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. Ursula Gierlachowski
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. Ursula Gierlachowski's NPI number?
Dr. Ursula Gierlachowski's NPI number is 1679629976. It was assigned on January 27, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ursula Gierlachowski?
Dr. Ursula Gierlachowski is an internist in Stockton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ursula Gierlachowski practice?
Dr. Gierlachowski practices at 1800 N California St, Stockton, CA 95204. Dr. Gierlachowski's primary practice is Dignity Health - St. Joseph's Medical Center in Stockton, California, part of CommonSpirit Health. Dmand AI also links Dr. Gierlachowski to 1 physician office.
What is Dr. Ursula Gierlachowski's office phone number?
The practice phone on file for Dr. Gierlachowski is (209) 943-2000.
Which hospitals is Dr. Ursula Gierlachowski affiliated with?
Dr. Gierlachowski practices at Dignity Health - St. Joseph's Medical Center in Stockton, California.
Does Dr. Ursula Gierlachowski accept Medicare?
Yes. CMS data shows Dr. Gierlachowski billed Medicare for 202 services in 2020.
What services does Dr. Ursula Gierlachowski bill to Medicare?
In 2020, Dr. Gierlachowski's most billed Medicare services were office visit, established patient (99213), surgery: heart and blood vessels (36415) and office visit, established patient (99214).
What drugs does Dr. Ursula Gierlachowski prescribe most?
In 2021 Medicare Part D data, Dr. Gierlachowski's most prescribed drugs by claims were Acyclovir.
Has Dr. Ursula Gierlachowski received payments from drug or device companies?
CMS Open Payments shows $388 in general payments to Dr. Gierlachowski from 7 companies from 2016 to 2020. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Ursula Gierlachowski been practicing?
Dr. Gierlachowski's NPI was assigned in 2007.
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