At a glance
CDC 2022- Transfers using a carrier
- 5% U.S. 4.7%
- Carrier transfers / yr
- ≈85 estimated
- Rank by carrier volume
- #23 of 450
- Services
- CarrierDonor eggEgg freezing
- Medical director
- Monica C. Pasternak, MD
- SART · Lab
- Member · Verified
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Spring Fertility
Reproductive endocrinology & IVF · San Francisco, CA
Spring Fertility reported to the CDC as 3 programs; its 5 locations are listed here as one clinic. The counts on this page add the programs together; each location’s doctors are listed below.
Spring Fertility is a fertility practice based in San Francisco, California, with five California offices on this page: Pacific Heights and SOMA in San Francisco, Oakland, Silicon Valley (in Sunnyvale) and Redwood City. It has an IVF laboratory at three of them: Pacific Heights, Oakland and Silicon Valley. It reports to the CDC as three programs, registered in San Francisco, Sunnyvale and Oakland. In reporting year 2022 the three programs together had 1,661 embryo transfers, an estimated 85 of them with a gestational carrier, about 5.1%.
For surrogacy intended parents
These figures add up the 3 programs Spring Fertility reported to the CDC separately: San Francisco, Silicon Valley, and East Bay. Shares by patient age and live-birth rates cannot be added up, because the CDC publishes them without the counts behind them, so they are shown for each program.
Share of transfers using a carrier, by patient age (2022)
San Francisco
Dark: San Francisco · Light: U.S. average
Silicon Valley
Dark: Silicon Valley · Light: U.S. average
East Bay
Dark: East Bay · Light: U.S. average
Three-year trend, share of transfers using a carrier
| Patient age | 2020 | 2021 | 2022 | U.S. 2022 |
|---|---|---|---|---|
| San Francisco | ||||
| <35 | 3% | 6% | 9% | 3% |
| 35-37 | 4% | 4% | 6% | 4% |
| 38-40 | 6% | 4% | 6% | 5% |
| >40 | 4% | 4% | 7% | 10% |
| All ages | 4% | 5% | 7% | 5% |
| Silicon Valley | ||||
| <35 | — | 0% | 4% | 3% |
| 35-37 | — | 0% | 2% | 4% |
| 38-40 | — | 0% | 0% | 5% |
| >40 | — | 0% | 5% | 10% |
| All ages | — | 0% | 3% | 5% |
| East Bay | ||||
| <35 | — | 10% | 6% | 3% |
| 35-37 | — | — | 3% | 4% |
| 38-40 | — | 0% | 4% | 5% |
| >40 | — | — | 1% | 10% |
| All ages | — | 7% | 4% | 5% |
| All ages, programs combined | 4% | 4% | 5% | 5% |
Total transfers (all egg sources, the CDC's denominator): 2020: 878 · 2021: 1,417 · 2022: 1,661
Volume estimate = the CDC's reported all-ages share of transfers that used a gestational carrier × the program's total transfers (the transfer count the CDC uses as that share's denominator). Where the CDC suppressed the all-ages share, the age-group shares are used instead and the tile says so.
For egg donation intended parents
Live births per transfer, donor egg cycles (2022)
San Francisco
45 transfers
Silicon Valley
11 transfers
East Bay
10 transfers
Nearly all donor-egg transfers today are frozen embryo transfers — the embryo is frozen for genetic testing or scheduling whether the eggs were fresh or banked — so that is the figure to compare.
Share of cycles using donor eggs or embryos, by patient age
| Patient age | San Francisco | Silicon Valley | East Bay | U.S. 2022 |
|---|---|---|---|---|
| <35 | 1% | 0% | 0% | 2% |
| 35-37 | 1% | 0% | 0% | 3% |
| 38-40 | 1% | 0% | 0% | 5% |
| >40 | 6% | 6% | 3% | 21% |
Egg freezing services: Yes
Ivy's egg donation program runs fresh cycles with a matched donor. How Ivy egg donation works →
Locations & doctors
Showing all 5 locations. Select a location to see its address, whether it has its own lab, and the doctors who practice there.
Reproductive endocrinologists
Kelly McCarter, MD
Fertility Specialist
NPI 1093210783
Monica Pasternak, MD
Fertility Specialist
NPI 1881954238
Nam Tran, MD, PhD
Fertility Specialist
NPI 1780710418
Temeka Zore, MD
Fertility Specialist
NPI 1447526587
Angie Wang, MD
Fertility Specialist
English, Mandarin · NPI 1255785804
Brett Stark, MD
Fertility Specialist
NPI 1831693779
Julia Kim, MD, MPH
Fertility Specialist; Physician Partner; Director of Physician Integration and Clinical Services
NPI 1205254620
NPI Registry and the clinic's website. Listing is factual and public. Physicians may request a correction or removal at any time.
Ivy at Spring Fertility
1–10 journeys with a transfer at Spring Fertility
Surrogacy law in California
California is different — and that difference matters. Surrogacy in California offers intended parents and surrogates the nation’s most predictable legal system, advanced IVF options, and world-class logistics for families from across the U.S. and abroad. At Ivy Surrogacy, based in California, we coordinate the medical, legal, and emotional details so your journey runs smoothly from start to finish.
Surrogacy in California →Questions about Spring Fertility
Does Spring Fertility do gestational carrier cycles, and how many?
Yes. With its three CDC programs added together, the figures give an estimated 85 transfers with a gestational carrier in 2022 and 63 in 2021, out of 1,661 embryo transfers in 2022. That is about 5.1%, close to the share across all U.S. clinics, about 5%. Most were at the San Francisco program: an estimated 57 of its 856 transfers (6.7%), against 13 of 404 at Silicon Valley (3.2%) and 15 of 401 at East Bay (3.7%). In 2020, when only the San Francisco program reported, the estimate was 35.
Which Spring Fertility offices have an IVF lab?
Three of the five offices on this page: Pacific Heights in San Francisco (1 Daniel Burnham Court), Oakland (80 Grand Avenue) and Silicon Valley in Sunnyvale (550 Lakeside Drive). The clinic's website describes the other two, SOMA in San Francisco and Redwood City, as offices for consultations and monitoring only.
What are Spring Fertility's results with donor eggs?
Spring Fertility's three programs reported 66 transfers in donor egg cycles for 2022: 45 at San Francisco, 11 at Silicon Valley and 10 at East Bay. The CDC printed one live-birth rate, for the San Francisco program: with frozen embryos from donor eggs, 41% of transfers led to a live birth (U.S.: 45%).
Why does this page add together three CDC programs for Spring Fertility?
Spring Fertility reports to the CDC as three programs: Spring Fertility-San Francisco, Spring Fertility-Silicon Valley, registered in Sunnyvale, and Spring Fertility-East Bay, registered in Oakland. Their offices are all on this page, so the page lists the practice as one clinic, under the name its website uses, and adds the three programs' counts together. Silicon Valley and East Bay first reported in 2021. The CDC also registers Spring Fertility-New York; that office is not on this page and its figures are not included.
Do any doctors at Spring Fertility speak a language other than English?
Yes. According to the biography on the clinic's website, Angie Wang speaks English and Mandarin Chinese.
Sources
- CDC ART Success Rates: Clinic Services & Profiles (2022) — CDC National ART Surveillance System (NASS), 2022 reporting year, dataset ix4g-rt8v
- CDC ART Success Rates: Patient & Cycle Characteristics (2022) — CDC National ART Surveillance System (NASS), 2022 reporting year, dataset wrev-kwxu
- CDC ART Success Rates: Success Rates (2022) — CDC National ART Surveillance System (NASS), 2022 reporting year, dataset cchw-gdwa
- CDC ART Success Rates: Summary (2022) — CDC National ART Surveillance System (NASS), 2022 reporting year, dataset 9tjt-seye
- NPPES NPI Registry — CMS National Plan and Provider Enumeration System — physician roster
- CDC National ART Surveillance System clinic datasets for Spring Fertility-San Francisco (clinic ID 723), Spring Fertility-Silicon Valley (clinic ID 875), and Spring Fertility-East Bay (clinic ID 876), reporting years 2020–2022. Counts on this page are the sum of these programs.
- NPPES NPI Registry, physicians with taxonomy 207VE0102X at the clinic's addresses.
- Spring Fertility website.
- Reporting year 2022 is the most recent published by the CDC.
- CDC datasets are published with a lag of several years, and the field has since seen many mergers, acquisitions and renamings. We update each clinic’s current name, network and offices from its own website as best we can, but details may be out of date (the CDC-registered name appears in the citation above). Clinics may request corrections at any time.
- The gestational carrier volume is an estimate from the CDC’s own figures for the reporting year shown — an indication of scale, not a current or exact count.
- Ivy journey counts are Ivy Surrogacy's own records.
- Ivy Surrogacy is an independent agency; this listing does not imply affiliation with or endorsement by Spring Fertility unless stated.
- Informational only, not medical advice; clinics are not ranked by success rate.
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