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The Maas Clinic San Francisco

4.8 ★ · 142 Google reviews

Services
Neurotoxin injections · Dermal filler · Lip filler · Under-eye filler · Deoxycholic acid (Kybella) · Poly-L-lactic acid (Sculptra) · Calcium hydroxylapatite (Radiesse) · Skin boosters · PRP and PRF · Facials · Chemical peels · Microneedling · RF microneedling · Non-ablative laser · IPL and photofacial · Laser hair removal · Medical dermatology · Body contouring · Muscle toning · Skin tightening · Cellulite treatment · Hyperhidrosis · Electrolysis · Cosmetic surgery · Hair restoration · Medical weight loss (GLP-1) · Peptide therapy
Location
2400 Clay St, San Francisco, CA 94115

Verification Summary for The Maas Clinic

Status
Partly checked
Named clinicians
2 listed; 4 more names held for review
Current license matches
2 of 2 named clinicians matched to current California professional license records.
Medical Director
Not established from the clinicians listed here
Last checked
October 17, 2026

4 further names on the clinic's website are not listed: we could not read them with enough confidence, and no current license record matched them.

Services Offered by The Maas Clinic

Injectables

  • Neurotoxin injections · BOTOX, Daxxify, Dysport, Jeuveau, Xeomin
  • Dermal filler · Belotero, Juvederm, Restylane, RHA
  • Lip filler
  • Under-eye filler
  • Deoxycholic acid (Kybella)
Show moreShow fewer
  • Poly-L-lactic acid (Sculptra)
  • Calcium hydroxylapatite (Radiesse)
  • Skin boosters · Skinvive
  • PRP and PRF

Skin

  • Facials
  • Chemical peels
  • Microneedling
  • RF microneedling
  • Non-ablative laser · Clear + Brilliant
Show moreShow fewer
  • IPL and photofacial
  • Laser hair removal
  • Medical dermatology

Body

  • Body contouring · CoolSculpting
  • Muscle toning · CoolTone
  • Skin tightening · Sofwave, Ultherapy
  • Cellulite treatment · Aveli, Cellfina, Avéli
  • Hyperhidrosis · Miradry
Show moreShow fewer
  • Electrolysis
  • Cosmetic surgery
  • Hair restoration · Neograft

Wellness

  • Medical weight loss (GLP-1)
  • Peptide therapy

The website of The Maas Clinic in San Francisco lists 27 services: neurotoxin injections, dermal filler, lip filler, under-eye filler, deoxycholic acid (Kybella), poly-L-lactic acid (Sculptra), calcium hydroxylapatite (Radiesse), skin boosters, PRP and PRF, facials, chemical peels, microneedling, RF microneedling, non-ablative laser, IPL and photofacial, laser hair removal, medical dermatology, body contouring, muscle toning, skin tightening, cellulite treatment, hyperhidrosis, electrolysis, cosmetic surgery, hair restoration, medical weight loss (GLP-1), and peptide therapy.

Google Rating and Reviews for The Maas Clinic

Google rating 4.8 from 142 reviews, read October 19, 2026.

Google rating
4.8
Google review count
142 reviews
Google data checked
October 19, 2026
On Google Maps

Google rating and review information is provided for consumer reference and is not used to determine Verified Injector verification status.

Source: Google Maps

The Maas Clinic Location, Hours and Contact

Address
2400 Clay StSan Francisco, CA 94115

Address as stated on the clinic's website, read Oct. 11, 2026. maasclinic.com

Directions
Get directions

The Maas Clinic Clinicians and California License Status

Verified Injector lists two clinicians named by The Maas Clinic, and four more names held for review. Both matched current California professional license records.

This clinic has more than one address, and its website does not say which clinicians work at which one. The clinicians listed here are named for the whole practice and may work at another location. Licenses were checked in this location's state.

Corey S Maas, MD, FACS

Verification result
Current license matched
Credential
MD, FACS
California license status
California Medical License: Current
License number
71163
License expires
July 2028
NPI
1851469282
Primary taxonomy
Surgery, Plastic and Reconstructive Surgery
Role stated by clinic
Director
Checked
Verified October 17, 2026
View verification evidence

Clinic-reported

Clinic-stated role
Director
Credential
MD, FACS
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
maasclinic.com
Date checked
October 18, 2026
Dr. Corey S Maas

Federal provider record

NPI
1851469282
Primary taxonomy
Surgery, Plastic and Reconstructive Surgery
Date checked
October 17, 2026

State professional license

Credential
MD, FACS
State license
Physician and Surgeon G, Medical Board of California
License number
71163
Status
Current
Expires
July 2028
Checked
October 17, 2026

Board action recorded: Not published by this board.

Physician and Surgeon G license 71163; COREY S MAAS; status: Current; expires 2028-07-31; issued 1991-04-22; board action: not published by this register; city SAN FRANCISCO; ca-mbc published 2026-10-01, MedicalBoard_Data00.xls row 199925

State data published October 1, 2026.

California license record matched.

Verification finding

Result
Current license matched (Current)

The Maas Clinic names Corey S Maas, MD, FACS, with the stated role Director. Verified Injector matched this clinician to license 71163 at the Medical Board of California, which that board recorded as Current when checked October 17, 2026.

Hailey Juszczak, MD

Verification result
Current license matched
Credential
MD
California license status
California Medical License: Current
License number
206818
License expires
March 2028
NPI
No NPI record matched
Role stated by clinic
No role stated by the clinic
Checked
Verified October 17, 2026
View verification evidence

Clinic-reported

Clinic-stated role
No role stated on the pages reviewed
Credential
MD
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Date checked
October 18, 2026
Hailey Juszczak, M.D.

Federal provider record

No NPI record was matched for this name. An NPI is a billing identifier, and it says nothing about the state license check below. The name on the clinic's website may be written differently in the registry, or shared by more than one record.

State professional license

Credential
MD
State license
Physician and Surgeon A, Medical Board of California
License number
206818
Status
Current
Expires
March 2028
Checked
October 17, 2026

Board action recorded: Not published by this board.

Physician and Surgeon A license 206818; Hailey Marie Rodriguez Juszczak; status: Current; expires 2028-03-31; issued 2026-01-14; board action: not published by this register; city BROOKLYN; ca-mbc published 2026-10-01, MedicalBoard_Data00.xls row 99935

State data published October 1, 2026.

California license record matched.

Verification finding

Result
Current license matched (Current)

The Maas Clinic names Hailey Juszczak, MD, on its website. Verified Injector matched this clinician to license 206818 at the Medical Board of California, which that board recorded as Current when checked October 17, 2026.

Before you book, ask who will treat you and check that they appear on this record. If they do not, look them up with the California licensing boards.

What Partly Checked Means for The Maas Clinic

2 of 2 named clinicians matched to current California professional license records. Last checked October 17, 2026.

Partly checked means we could not confirm every part of the Verified rule for this clinic, which is not a finding that any clinician is unlicensed.

It is not a rating of skill, safety or results, and it does not cover anyone the clinic does not name.

How verification works

Sources for The Maas Clinic

  • Clinic website (checked Oct. 18, 2026): clinic identity, clinician names, credentials, roles, services, address
  • Medical Board of California (checked Oct. 17, 2026; published Oct. 1, 2026): license, license number, status, expiration
  • National provider registry (NPI) (checked Oct. 17, 2026): identity confirmation, NPI, taxonomy
  • Google Maps (checked Oct. 19, 2026): rating, review count, links. Not used for verification status.

Other Verified Medical Spas in San Francisco, California

View all medical spas in San Francisco, California

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Data and Update Information

Clinician and license data last checked
October 17, 2026
Google rating and review data last checked
October 19, 2026
Clinic website data last checked
October 18, 2026

Verified Injector verifies professional credentials. Google provides consumer rating and review data.