Skip to content

Robert F. Mannis, Ph.DPsychologist in Frederick, MD

Robert F. Mannis, Ph.D is a psychologist at 235 W Patrick St, Frederick, MD 21701, ranked #6 of 35 psychologists in Frederick and rated 5.0 from 13 Google reviews. Open Monday to Saturday.

This profile is built from public listing data. Confirm the provider’s license, services, fees and availability with the practice before you book.

Frederick, MDUpdated 0 paid placements in any rankingHow we rank

Call (301) 662-4160Website ↗

Key facts

Key facts about Robert F. Mannis, Ph.D
Address235 W Patrick St, Frederick, MD 21701Get directions
Phone(301) 662-4160
Websiterobertfmannisphd.com
HoursMonday to Friday: 8 AM – 5 PM; Saturday: 9 AM – 5 PM
Google rating5.0 from 13 Google reviews

Specialties

Each specialty shows the evidence we matched it on.

Service area

Serves Frederick and 5 towns within 20 miles: Ballenger Creek, Green Valley, Clarksburg, Damascus and Germantown.

Based in Frederick, MDView on map

Opening hours

Opening hours for Robert F. Mannis, Ph.D
DayHours
Monday8 AM – 5 PM
Tuesday8 AM – 5 PM
Wednesday8 AM – 5 PM
Thursday8 AM – 5 PM
Friday8 AM – 5 PM
Saturday9 AM – 5 PM
SundayClosed
  • Open evenings — no
  • Open Saturdays
  • Open Sundays — no

Questions about Robert F. Mannis, Ph.D

How is Robert F. Mannis, Ph.D ranked in Frederick?

Robert F. Mannis, Ph.D is ranked #6 of 35 psychologists in Frederick by RP Score, with 73 out of 100 as of November 2026. The score weighs reputation, review volume, recency, availability, specialty focus, proximity, claimed profile and partnered. No business can pay to change its rank.

What are Robert F. Mannis, Ph.D’s hours?

Robert F. Mannis, Ph.D is open Monday to Saturday. Its listed hours are Monday to Friday, 8 AM – 5 PM; Saturday, 9 AM – 5 PM. On Saturdays it is open 9 AM to 5 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Robert F. Mannis, Ph.D serve?

Serves Frederick and 5 towns within 20 miles: Ballenger Creek, Green Valley, Clarksburg, Damascus and Germantown. The list is based on the business's location and the usual service radius for psychology. Confirm your address is covered when you call.

What do Google reviews say about Robert F. Mannis, Ph.D?

Robert F. Mannis, Ph.D has a rating of 5.0 from 13 Google reviews. The RP Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Robert F. Mannis, Ph.D?

Call Robert F. Mannis, Ph.D on (301) 662-4160. The business is at 235 W Patrick St, Frederick, MD 21701. Its website is linked in the key facts on this page. Ask about fees, insurance and openings before you book a first session.

Own Robert F. Mannis, Ph.D? Claim this profile.

Claiming is free. Correct your hours, specialties and service area. The RP Score is recalculated from corrected data; payment never changes it.

Claim this profile

Compare nearby psychologists

Robert F. Mannis, Ph.D compared with nearby businesses
BusinessRankRP ScoreGoogle ratingSaturdaySundayDistance away
Robert F. Mannis, Ph.D (this business)—735.0 (13)YesNo
Dr. Heather Hunt#4732.3 (3)——0.1 mi
Snyder Rebecca L#5732.3 (3)——2.7 mi
Melanie Sholtis, Psy.D.#7695.0 (6)NoNo0.3 mi

See all 35 ranked psychologists in Frederick