NephrolithiasisNephrolithotomy, PercutaneousRadiation Exposure
Dr. Natalia C. Llarena, MD
NPI1083005300
- Part D claims, 2018
- 12
- Publications
- 23
- Industry payments
- $557
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 333 S Arroyo Parkway, 3rd Floor, Pasadena, CA 91105
- Practice phone
- Call (626) 440-9161
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Reproductive Surgical Associates - Pasadena
Surgery Center - Medicare-Certified · Pasadena, California
Find Dr. Llarena's professional email, personal email and mobile number
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Dr. Natalia C. Llarena is a reproductive endocrinology physician in Pasadena, California
Dr. Llarena practices at Reproductive Surgical Associates - Pasadena in Pasadena, California.
Dr. Llarena's NPI, 1083005300, was assigned on February 9, 2015. Dr. Llarena graduated from Feinberg School of Medicine in 2015. Dr. Llarena holds California license A177111.
NPI and contact details
- NPI
- 1083005300NPI Registry (opens in a new tab)
- NPI enumeration date
- February 9, 2015
- NPI status
- Active
- Practice phone
- (626) 440-9161
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Natalia C. Llarena practices at Reproductive Surgical Associates - Pasadena in Pasadena, California
Dr. Llarena's primary practice is Reproductive Surgical Associates - Pasadena, at 333 S Arroyo Parkway, 3rd Floor, Pasadena, CA 91105. The practice phone is (626) 440-9161.
- Reproductive Surgical Associates - Pasadena333 S Arroyo Parkway, 3rd Floor, Pasadena, CA 91105Phone(626) 440-9161
Source: Dmand AI Affiliation Data
Dr. Natalia C. Llarena is affiliated with 1 site of care and 1 medical group
Dr. Llarena's primary practice is Reproductive Surgical Associates - Pasadena in Pasadena, California. The medical group on file is University Hospitals Medical Practices.
Reproductive Surgical Associates - PasadenaPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Natalia C. Llarena's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Llarena practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Reproductive Surgical Associates - Pasadena | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Natalia C. Llarena is one of 219 reproductive endocrinology physicians in California
Reproductive endocrinology is Dr. Llarena's primary specialty in the NPI Registry, under taxonomy code 207VE0102X. Dr. Llarena is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Llarena's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Reproductive endocrinology, CaliforniaPrimary
- Ohio license
Reproductive endocrinology physicians near Dr. Llarena
Counts of reproductive endocrinology physicians with a Dmand AI profile, by place and practice. Each opens the list.
219reproductive endocrinology physicians in California20reproductive endocrinology physicians in Pasadena
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Natalia C. Llarena's patients have a median age of 38
Across all payers, Dmand AI patient panel data puts Dr. Llarena's median patient age at 38, with 92% women.
Dr. Llarena's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women92%
- Men6%
Source: Dmand AI Patient Panel Data
Dr. Natalia C. Llarena wrote 12 Medicare Part D claims in 2018
In 2018, Dr. Llarena wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $71 in total drug cost. In 2017, CMS named 56 claims across 3 drugs.
Part D claims, 201812
Drugs named by CMS1
Total drug cost$71
Dr. Llarena's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 562018: 1279%
Drugs named by CMS: 1 in 2018, 3 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Natalia C. Llarena has 23 publications on record
Dmand AI links 23 papers to Dr. Llarena, published from 2014 to 2023. 2020 was the busiest year, with 5. The most frequent topics are Endometriosis, Hysterectomy and Leiomyoma. Dr. Llarena has published most often in J Assist Reprod Genet. Dr. Llarena's most frequent co-authors are Tommaso Falcone, MD, Elliott Grant Richards, MD and Kaia Marion Schwartz, MD.
Papers23
Years published2014 to 2023
Dr. Llarena's papers by year, 2014 to 2023
Topics Dr. Llarena writes about most
- Endometriosis
- Hysterectomy
- Leiomyoma
- Uterine Myomectomy
- Aging
- Breast Neoplasms
- Gonadotropin-Releasing Hormone
- Infertility, Female
Dr. Llarena's most frequent co-authors
- Tommaso Falcone, MD7 shared papers
- Elliott Grant Richards, MD3 shared papers
- Kaia Marion Schwartz, MD3 shared papers
Recent publications by Dr. Llarena
J Minim Invasive Gynecol
FertilityGoalsHysterectomy
J Assist Reprod Genet
BlastocystCell CycleEmbryo Culture Techniques
See who Dr. Llarena researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Llarena works with, so you can find a warm path to the right reproductive endocrinology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Natalia C. Llarena received $557 in industry payments from 2022 to 2025
CMS Open Payments shows 15 general payments to Dr. Llarena from 3 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Ferring Pharmaceuticals Inc. paid the most, $329.
General payments to Dr. Llarena by program year, 2022 to 2025
Companies that paid Dr. Llarena the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Natalia C. Llarena graduated from Feinberg School of Medicine
Dr. Llarena graduated from Feinberg School of Medicine in 2015.
- Medical school
- Board certified in obstetrics & gynecology
- Board certified in reproductive endocrinology/infertility
Source: Dmand AI Professional Profile Data
Dr. Natalia C. Llarena accepts plans from 13 insurance carriers
Dr. Llarena is in network with 13 carriers, including Aetna, United Healthcare and Cigna. HMO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Cigna
- Kaiser Permanente
- LA Care
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- +5 more carriersWith a free account
Plan types Dr. Llarena accepts, by number of carriers
- HMO7
- Medicare7
- PPO7
- POS5
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Natalia C. Llarena'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 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) |
| 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) |
| 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. Natalia C. Llarena
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. Natalia C. Llarena's NPI number?
Dr. Natalia C. Llarena's NPI number is 1083005300. It was assigned on February 9, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Natalia C. Llarena?
Dr. Natalia C. Llarena is a reproductive endocrinology physician in Pasadena, California. The primary specialty in the NPI Registry is Reproductive Endocrinology Physician (taxonomy code 207VE0102X).
Where does Dr. Natalia C. Llarena practice?
Dr. Llarena practices at 333 S Arroyo Parkway, 3rd Floor, Pasadena, CA 91105. Dr. Llarena's primary practice is Reproductive Surgical Associates - Pasadena in Pasadena, California.
What is Dr. Natalia C. Llarena's office phone number?
The practice phone on file for Dr. Llarena is (626) 440-9161.
What is Dr. Natalia C. Llarena's medical license number?
Dr. Llarena holds California license A177111, one of the licenses on file in 2 states.
Which states has Dr. Natalia C. Llarena been licensed in?
Dmand AI has state licenses on file for Dr. Llarena in California (2022 to 2026) and Ohio (2015 to 2022).
What medical group is Dr. Natalia C. Llarena part of?
Dr. Llarena is linked to University Hospitals Medical Practices.
Is Dr. Natalia C. Llarena board certified?
Yes. Dr. Llarena is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Natalia C. Llarena go to medical school?
Dr. Llarena graduated from Feinberg School of Medicine in 2015.
What drugs does Dr. Natalia C. Llarena prescribe most?
In 2018 Medicare Part D data, Dr. Llarena's most prescribed drugs by claims were Oxycodone HCl.
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Has Dr. Natalia C. Llarena received payments from drug or device companies?
CMS Open Payments shows $557 in general payments to Dr. Llarena from 3 companies from 2022 to 2025. The largest total came from Ferring Pharmaceuticals Inc.
How long has Dr. Natalia C. Llarena been practicing?
Dr. Llarena graduated from medical school in 2015, 11 years ago.
Does Dr. Natalia C. Llarena do research?
Dmand AI links 23 publications to Dr. Llarena, published from 2014 to 2023.
Who does Dr. Natalia C. Llarena publish with?
Dr. Llarena's most frequent co-authors are Tommaso Falcone, MD (7 shared papers), Elliott Grant Richards, MD (3 shared papers) and Kaia Marion Schwartz, MD (3 shared papers).
What insurance does Dr. Natalia C. Llarena accept?
Dr. Llarena is in network with 13 carriers, including Aetna, United Healthcare and Cigna. HMO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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