All services have resumed at the Martha’s Vineyard Hospital after nearly four months of pandemic-related closures, as phase three of reopening plan kicks into gear.

But there are some twists to the normal operating procedure.

In a press briefing on Wednesday, hospital officials said that while the facility is running at approximately 70 per cent capacity, they confirmed longer delays for some backlogged departments and a high volume of sick patients arriving at the emergency room, indicating that patients may be putting off care.

And with coronavirus cases numbers seeing an uptick on the Island as summer arrives, president and chief executive officer Denise Schepici again decried the lack of face coverings and reiterated the importance of mask-wearing.

“I’m still concerned about the number of people I see walking about without masks,” Ms. Schepici said. “Last week . . . any time I drove around, I was still observing a lot of people not wearing masks.”

The briefing was hosted by Ms. Schepici, head of operations and nursing Claire Seguin and hospital spokesman Katrina Delgadillo.

With the governor’s reopening plan underway, the hospital has gradually begun to resume in-person services over the past two months, initially offering procedures like mammograms and expanding into elective surgeries. On Wednesday, officials said they were now offering all former services.

“Everything is now open,” said Ms. Seguin. “It may be a little different, how you are screened before you come in. But every service is open.”

Ms. Seguin also took special note of very sick patients being seen at the ER.

“If you have a health care need, please do not delay your care,” she said. “The folks that are coming here to the emergency department are very, very sick, as though they are putting off their care.”

Some departments are experiencing delays for appointments due to density restrictions, backlogs and new screening procedures.

“The wait times are a little longer than before the pandemic,” Ms. Schepici said. “If you have a procedure, we have to screen you and get the test results. And because of the density issue, we have to slow things a little bit, space out our appointments a little more.”

But Ms. Schepici and Ms. Seguin said there are no wait times for emergencies, and said they were planning to “staff-up” over the next few weeks, particularly in the radiology department after analyzing the backlogs. Ms. Schepici also said the hospital call center had helped decrease wait times.

“That . . . will really flesh out a little bit, and those wait lines won’t be so long,” Ms. Seguin said.

Covid-19 testing numbers have also increased at the hospital in recent weeks, although leaders said Wednesday that the criteria for testing had not changed. The hospital is currently testing only symptomatic patients and their close contacts for the virus.

The increase in testing numbers can at least partly be tracked to the large number of patients who need tests before receiving a procedure or being admitted, Ms. Seguinsaid. The hospital has now tested more than 2,000 patients for the virus, with testing numbers reaching over 40 people on many days.

With summer in full swing, Ms. Schepici again affirmed the importance of wearing masks, saying the science shows it can save lives.

While Edgartown voted last week to institute a mask requirement in its downtown, going beyond the governor’s order that requires masks for people who cannot socially distance, other towns have backed off a stricter mask requirement. Ms. Schepici said she hoped other towns would follow suit.

The Oak Bluffs board of health is due to vote on a mandatory mask requirement Thursday.

“In general, I believe a more consistent approach by all the towns is really better in this situation,” Ms. Schepici said. “It’s hard to do, every town has different . . . issues that they have to deal with. But my preference obviously would be to see everybody to follow suit like Edgartown.”

Meanwhile, hospital business is increasing daily after plummeting in April and May, Ms. Schepici said.

“It’s coming back, and it’s coming back quickly,” Ms. Schepici said.