Dr. Lynn S. Gretkowski, MD
- Medicare services, 2016
- 30
- Part D claims, 2024
- 30
- Hospital affiliations
- 1
- Industry payments
- $21
- Medical group
- 1
- Practice address
- 2500 Grant Road, Mountain View, CA 94040
- Practice phone
- Call (650) 940-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gretkowski'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. Lynn S. Gretkowski is an OB-GYN in Mountain View, California
Dr. Gretkowski practices at El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District.
Dr. Gretkowski's NPI, 1619083250, was assigned on August 23, 2006. Dr. Gretkowski graduated from Rutgers New Jersey Medical School in 1992. Dr. Gretkowski's California license number on file is G79304.
- NPI
- 1619083250NPI Registry (opens in a new tab)
- NPI enumeration date
- August 23, 2006
- NPI status
- Active
- Practice phone
- (650) 940-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Lynn S. Gretkowski practices at El Camino Health - Mountain View Hospital in Mountain View, California
Dr. Gretkowski's primary practice is El Camino Health - Mountain View Hospital, at 2500 Grant Road, Mountain View, CA 94040 in Santa Clara County. The practice phone is (650) 940-7000.
- El Camino Health - Mountain View Hospital2500 Grant Road, Mountain View, CA 94040 · Santa Clara CountyPhone(650) 940-7000
Source: Dmand AI Affiliation Data
Dr. Lynn S. Gretkowski is affiliated with 3 sites of care and 1 medical group
Dr. Gretkowski's primary practice is El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District. The medical group on file is Ob Hospitalist Group. Dmand AI also links Dr. Gretkowski to 2 more hospital outpatient departments, 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. Lynn S. Gretkowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gretkowski practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| El Camino Health - Mountain View Hospital | 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 El Camino Healthcare District and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Lynn S. Gretkowski is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Gretkowski's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Gretkowski is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Gretkowski's licenses on file in 15 states: California, Louisiana, Oregon, South Dakota, Florida, Illinois, Montana, Arizona, Colorado, Delaware, Georgia, Indiana, Kentucky, Michigan and North Dakota.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Louisiana license
- Oregon license
- South Dakota license
- Florida license
- Illinois license
- Montana license
- Arizona license
- Colorado license
- Delaware license
- Georgia license
- Indiana license
- Kentucky license
- Michigan license
- North Dakota license
OB-GYNs near Dr. Gretkowski
Counts of OB-GYNs 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. Lynn S. Gretkowski billed Medicare for 30 services in 2016
CMS data shows 30 Medicare services from Dr. Gretkowski across 2 procedure codes in 2016. Medicare paid $2,014 for them. Every service was in an office.
Dr. Gretkowski's Medicare services by type, 2016
- Other services16
- Office and hospital visits14
Dr. Gretkowski compared with the California median for OB-GYNs, 2016
- Dr. Gretkowski
- California median
- Medicare services
- 30vs 5848% below
- Part D claims
- 41vs 3517% above
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Gretkowski'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gretkowski and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lynn S. Gretkowski's patients have a median age of 33
Across all payers, Dmand AI patient panel data puts Dr. Gretkowski's median patient age at 33, with 100% women.
Dr. Gretkowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 33
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Lynn S. Gretkowski wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Gretkowski wrote 30 Medicare Part D claims for 19 patients. 63% of them were for generic drugs. They cover 1 drug, with $47,380 in total drug cost. In 2022, CMS named 44 claims across 3 drugs.
Dr. Gretkowski's Part D claims by kind of drug, 2024
- Generic19 claims63%
- Brand-name11 claims37%
Dr. Gretkowski's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 442023: 417%
Drugs named by CMS: 1 in 2023, 3 in 2022.
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
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Dr. Lynn S. Gretkowski received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Gretkowski from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Halyard Health, Inc. paid the most, $21.
Companies that paid Dr. Gretkowski 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. Lynn S. Gretkowski graduated from Rutgers New Jersey Medical School
Dr. Gretkowski graduated from Rutgers New Jersey Medical School in 1992.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Lynn S. Gretkowski accepts plans from 3 insurance carriers
Dr. Gretkowski is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
Plan types Dr. Gretkowski accepts, by number of carriers
- PPO3
- Medicare2
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Lynn S. Gretkowski'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)Medicare Part D Prescribers - by Provider (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. Lynn S. Gretkowski
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. Lynn S. Gretkowski's NPI number?
Dr. Lynn S. Gretkowski's NPI number is 1619083250. It was assigned on August 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lynn S. Gretkowski?
Dr. Lynn S. Gretkowski is an OB-GYN in Mountain View, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Lynn S. Gretkowski practice?
Dr. Gretkowski practices at 2500 Grant Road, Mountain View, CA 94040. Dr. Gretkowski's primary practice is El Camino Health - Mountain View Hospital in Mountain View, California, part of El Camino Healthcare District. Dmand AI also links Dr. Gretkowski to 2 hospital outpatient departments.
What is Dr. Lynn S. Gretkowski's office phone number?
The practice phone on file for Dr. Gretkowski is (650) 940-7000.
What is Dr. Lynn S. Gretkowski's medical license number?
Dr. Gretkowski's California license number on file is G79304, one of the licenses on file in 15 states.
Which states has Dr. Lynn S. Gretkowski been licensed in?
Dmand AI has state licenses on file for Dr. Gretkowski in California (1994 to 2025), Louisiana (since 2022), Oregon (since 1996), South Dakota (since 2025), Florida (2022 to 2026), Illinois (2022 to 2026), Montana (2022 to 2026), Arizona (2022 to 2025), Colorado (2022 to 2025), Delaware (2022 to 2025), Georgia (2022 to 2025), Indiana (2023 to 2025), Kentucky (2022 to 2025), Michigan (2022 to 2025) and North Dakota (2022 to 2025).
Which hospitals is Dr. Lynn S. Gretkowski affiliated with?
Dr. Gretkowski practices at El Camino Health - Mountain View Hospital in Mountain View, California.
What medical group is Dr. Lynn S. Gretkowski part of?
Dr. Gretkowski is linked to Ob Hospitalist Group.
Does Dr. Lynn S. Gretkowski accept Medicare?
Yes. CMS data shows Dr. Gretkowski billed Medicare for 30 services in 2016.
Is Dr. Lynn S. Gretkowski board certified?
Yes. Dr. Gretkowski is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
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What services does Dr. Lynn S. Gretkowski bill to Medicare?
In 2016, Dr. Gretkowski's most billed Medicare services were medicare service (G0101) and office visit, established patient (99214).
Where did Dr. Lynn S. Gretkowski go to medical school?
Dr. Gretkowski graduated from Rutgers New Jersey Medical School in 1992.
What drugs does Dr. Lynn S. Gretkowski prescribe most?
In 2023 Medicare Part D data, Dr. Gretkowski's most prescribed drugs by claims were Mounjaro.
Has Dr. Lynn S. Gretkowski received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Dr. Gretkowski from 1 company from 2025 to 2025. The largest total came from Halyard Health, Inc.
How long has Dr. Lynn S. Gretkowski been practicing?
Dr. Gretkowski graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Lynn S. Gretkowski accept?
Dr. Gretkowski is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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